Lexus RX330.book

BlueHeat
Coolant Heater
2004 Lexus RX330
3.3 Liter V-6
Installation Instructions
– Improper installation or repair of Webasto heating and cooling systems can cause fire
or the leakage of deadly carbon monoxide leading to serious injury or death.
– Installation and repair of Webasto heating and cooling systems requires special
Webasto training, technical information, special tools and special equipment.
– NEVER attempt to install or repair Webasto heating or cooling system unless you have
successfully completed the factory training course and have the technical skills,
technical information, tools and equipment required to properly complete the
necessary procedures.
– ALWAYS carefully follow Webasto installation and repair instructions and heed all
WARNINGS.
– Webasto rejects any liability for problems and damage caused by the system being
installed by untrained personnel.
DOC P/N 5000684A
KIT P/N 5000655B
BlueHeatTM
2004 Lexus RX330 3.3 Liter V-6
Table of Contents
Foreword
Scope and Purpose . . . . . . . . . . . . . . . . . . . . . . . I
Tools Required. . . . . . . . . . . . . . . . . . . . . . . . . . . I
Heater Installation Site . . . . . . . . . . . . . . . . . . . . II
Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
Installation
Heater Preparation and Mounting . . . . . . . . . . . . 1
Electrical Harness- - Overview . . . . . . . . . . . . . . . 2
Fuse Holder / Relays / Resistor . . . . . . . . . . . . . . . 3
Electrical Harness Routing . . . . . . . . . . . . . . . . . . 3
Integration with HVAC Blower Motor . . . . . . . . . 4
Timer Installation - Model 1533 . . . . . . . . . . . . . 5
Ignition ‘On’ Fuse Tap Connection. . . . . . . . . . . . 5
Integration into the Fuel System . . . . . . . . . . . . . 6
Fuel Standpipe Installation . . . . . . . . . . . . . . . . . 6
Fuel Metering Pump Installation . . . . . . . . . . . . . 7
Fuel Line and Cable Installation . . . . . . . . . . . . . 8
Integration into the Coolant System . . . . . . . . . . 9
Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . 10
Combustion Air Intake Installation . . . . . . . . . . 11
Concluding Work . . . . . . . . . . . . . . . . . . . . . . . 12
Power Connection . . . . . . . . . . . . . . . . . . . . . . 12
Final Inspection and Initial Start-up . . . . . . . . . . 12
Basic Troubleshooting. . . . . . . . . . . . . . . . . . . . 14
Wiring Schematic - Part 1. . . . . . . . . . . . . . . . . 16
Wiring Schematic - Part 2. . . . . . . . . . . . . . . . . 17
Plumbing Schematic . . . . . . . . . . . . . . . . . . . . . 18
Foreword
Scope and Purpose
These non-binding installation instructions are intended to support authorized Webasto trained distributors,
dealers and personnel in the installation of the Thermo Top BlueHeat coolant heaters.
These non-binding installation instructions apply to the 2004 Lexus RX330, 3.3 liter gasoline version, unless
technical modifications on the vehicle influence the installation, excluding all liability claims. Depending on the
version and equipment in the vehicle, changes may be required to the installation work set out in these
installation instructions. In any event, however, the directives in the “installation manual” and “operating
manual” must be followed. Acknowledged engineering conventions must be observed for the installation work.
ATTENTION
All relevant state and provincial licensing regulations if any, governing the installation and use of auxiliary
heating devices must be observed!
CAUTION
Location of heater, installation of coolant lines, fuel system and components, wiring and control devices are
important for proper operation. Failure to comply with the installation instructions provided may result in
poor operation or damage to heater and vehicle components.
Tools Required
1/4” Drive Ratchet
1/4” Drive 4 inch extension
10 mm six point socket, 1/4” drive
10 mm six point deep well socket, 1/4” drive
Combination side-cut/crimping pliers
3/8” Drive Ratchet
3/8” Drive 12 inch extension
13 mm socket, 3/8” drive
15 mm socket, 3/8” drive
17 mm socket, 3/8” drive
Drill
2.5 mm (3/32 in.) drill bit
8.5 mm (21/64 in.) drill bit
9.5 mm (3/8 in.) drill bit
10 mm (25/64 in.) drill bit
10 mm combination wrench
8 mm nut driver
Hacksaw
Utility Knife
Wire fish
Hoisting equipment and safety stands
Vehicle manufacturer’s service reference manual
Hose clamping pliers
Hose cutting pliers
Phillips #2 screwdriver
I
2004 Lexus RX330 3.3 Liter V-6
BlueHeatTM
Heater Installation Site
The Webasto BlueHeat auxiliary coolant heater is to be installed at the left front corner, behind the bumper as
shown in the illustration below.
Mounting Location
Fig. 1
Mounting Location
Heater Installed
Fig. 2
Preparations
Heater Kit
1. Verify and identify all contents of kit.
Vehicle
1. Verify fuel content in tank.
CAUTION
For reasons of safety due to the possibility of fuel spillage during the installation of a fuel standpipe, it is
recommended there be no more than 3/4 tank or less of fuel present.
If fuel quantity is greater than 3/4 of capacity, make provisions to reduce quantity of fuel.
2. Disconnect negative terminal of vehicle battery(s).
3. Remove front facia.
4. Protect vehicle against soiling and damage with fender covers and seat covers.
II
2004 Lexus RX330 3.3 Liter V-6
Installation
Heater Preparation
1
Position 1 and 2:
– Fasten bracket to heater using 2 M6 self-tapping EJOT
screws.
– Torque screws to 10 Nm. (88.5 lb-in.).
2
Fig. 3
Position 3 and 4:
– Relocate ground splice to location shown.
3
4
Fig. 4
Heater
Bracket
Position 5, 8 and 9
– Install outboard mounting bracket on heater with 2
M6 self-tapping EJOT screws
– Torque screws to 10 Nm. (88.5 lb-in.).
5
6
7
Position 6, 7 and 8
– Install outboard mounting bracket on vehicle body
with existing and new hardware.
Fig. 5
Position 10 and 11
– Install outboard mounting bracket on vehicle body
with existing and new hardware.
8
10
Fig. 6
1
9
11
2004 Lexus RX330 3.3 Liter V-6
Electrical Harness - Overview
Universal Electrical Harness - Description
Legend for Figure 7
1 - Fuse Holder and Fuses
2 - Resistor - HVAC blower speed control
3 - Relay K1 - HVAC control
4 - Relay K2 - HVAC control
5 - 18 GA Green - ‘ON’ signal from relay K1 and K2 to
relay K3, Pin 86 (Use when relay K3 is mounted with
relay K1 and K2)
6 - 18 GA Blue - to Ignition ‘ON’ signal source
7 - Main Heater Harness - BlueHeat Coolant Heater
8 - Blower Control Harness - Positive side
9 - 10 GA Red - Connects to HVAC control switch
circuit, positive side, to blower motor
10 - 10 GA Black - Connects to HVAC blower motor
positive side
11 - 18 GA Green - ‘ON’ signal from relay K1 and K2 to
relay K3, pin 86 (Use when relay K3 is mounted near
HVAC blower motor - same function as item 5
2
1
3
26
25
4
24
5
22
21
6
23
7
20
12 - Blower Control Harness - Negative side (Harness is
wire tied to main harness. Cut wire tie and separate
from main harness before installing)
19
13 - 10 GA Blue - Connects to HVAC control switch cir
cuit, negative side, to blower motor
8
9
14 - 10 GA White - Connects to HVAC blower motor
negative side
15 - 10 GA Brown - Connects to vehicle ground point
when relay K3 is mounted near HVAC blower motor
16 - 18 GA Green - Relay K3, pin 86 (Connects to ‘ON’
signal 18 GA green from relay K1 and K2). See item
5 and 11.
10 11
18
16
12
17 - Relay K3 - HVAC control (Typically mounted near
HVAC blower motor)
13
18 - 18 GA Blue & Brown - Fuel Metering Pump Harness
17
19 - 20 GA Black, Red & Brown - Timer Harness
20 - 18 GA Violet - “Vent Mode” for optional remote
control
21 - Main Power Harness
Fig.
Fig. 77
22 - 10 GA Red - Battery Positive
23 - 10 GA Brown - Battery Negative or Ground Point
24 - 18 GA Yellow - Diagnostic Connection
25 - 18 GA Orange - Supplemental heating option - Not
applicable to BlueHeat
26 - 10 GA Brown - Optional ground connection for
relay K3 when K3 is mounted with relay K1 and K2
(Same function as item 15)
2
15
14
2004 Lexus RX330 3.3 Liter V-6
Fuse Holder / Relays / Resistor
1
ATTENTION
The electrical harness is a two-part assembly. Before
installing, cut wire tie holding the negative side HVAC
blower harness (with relay K3) to the main harness and
separate.
Fuse Holder Position 1
Relays and
– Assemble mounting brackets as shown.
Resistor
Assembly
Position 2 and 3
– Fasten K1 and K2 relays to bracket.
– Install resistor on bracket.
3
Fig. 8
2
4
Position 4 and 5
– Fasten relay/resistor bracket assembly to body with two
screws.
– Fasten fuse holder to bracket assembly or vehicle
structure using nylon wire tie (Image not available).
5
Fig. 9
Electrical Harness Routing
Electrical
Harness
Routing
6
Position 6 and 7
– Route main harness down to heater mounting location
and connect to heater.
– Secure main harness with nylon wire ties.
Fig. 10
7
Position 8, 9 and 10
– Route timer and blower control harness through
vehicle bulkhead.
8
9
10
Fig. 11
3
2004 Lexus RX330 3.3 Liter V-6
Integration with HVAC Blower Motor
1
ATTENTION
It is permissible to cut excess length from blower control
wiring harnesses.
HVAC
Blower
Control
Harness
Integration
Position 1 and 2
– Locate vehicle blower motor under passenger side of
vehicle dash.
– Locate blower motor harness connector, cut blower
motor positive and negative wires approximately 2
inches from connector.
– Mount K3 relay under dash (Image not available).
2
Fig. 12
Make HVAC Blower wiring connections as follows:
Position 3
– Cut, strip and crimp
Position 4
– Cut, strip and crimp
Position 5
– Cut, strip and crimp
Position 6
– Cut, strip and crimp
Position 7
– Connect to chassis ground
Position 8
– Crimp green wire to green wire
3
4
5
ATTENTION
Check your wiring! Ensure that all connections have
been done in accordance with the accompanying wiring
diagram (Fig. 13). Sensitive electronic controls can be
damaged if wired incorrectly!
6
8
7
Fig. 13
Additional
– Secure HVAC blower control wiring to vehicle
structures with nylon wire ties (Image not available)
4
Legend for Figure 6
A From Webasto Heater X1
B 12 VDC ignition ‘On’ fuse tap
C HVAC control module
M HVAC blower motor
X Cut wire 50 mm (2 in.) from HVAC motor
F3 Fuse - Blower circuit 25 amp.
K1 Relay - Ignition ‘On’ interrupt
K2 Relay - Positive side of blower motor circuit
K3 Relay - Negative side of blower motor circuit
R1 Resistor - Blower speed control
30 Battery Positive (Constant power)
15 Ignition (Switched power)
31 Battery Negative (Chassis ground)
2004 Lexus RX330 3.3 Liter V-6
Timer Installation - Model 1533
ATTENTION
Before installing the timer, please confirm the
installation site with your customer.
CAUTION
Before drilling into any panels, ensure there are no
hidden components behind the panel that may be
damaged or interfere with the timer installation! If
necessary, to avoid damaging components, remove the
panel before drilling holes.
Timer
Installation
Fig. 14
Fig.
ATTENTION
DO NOT OVERTIGHTEN MOUNTING SCREW!
Overtightening mounting screw will cause stress on the
timer resulting in irreparable damage to the LED display.
Position 9
– Timer installed (See translated template for
instructions, refer to figure 14).
– Screw DIN7981 B3.5x19
– Timer harness connector (Click in)
– Tighten mounting screw - max. 0.8 Nm (7.0 lb-in.).
Fig. 15
Fig.
Fig.
9
Ignition ‘On’ Fuse Tap Connection
Ignition ‘On’
Position 10 and 11
Fuse Tap
– Route the blue fuse tap wire to fuse panel.
Installation
– With a test light, find an “Ignition ON” power source.
Test light must be off when ignition key is in the OFF
position.
– Using the supplied fuse tap connector, tap into the
“fused”side of the selected fuse.
Fig. 16
5
11
10
2004 Lexus RX330 3.3 Liter V-6
Integration into the Fuel System
WARNING
Full to partially filled fuel tanks are heavy and awkward
to handle. Before removing fuel tank to gain access to
the sender unit, ensure tank is near empty. To avoid
accidents and injury to personnel, make sure tank is well
supported while removing mounting hardware.
Fuel
Standpipe
Installation
– Remove the fuel tank from the vehicle following the
manufacturer’s recommended service procedures.
Position 1
– Remove drivers side fuel sender.
1
WARNING
Fire and explosion risk! Do not use an electric power
drill to bore into the sender unit as vaporizing fuel can
be ignited. Keep all sources of ignition away from the
fuel tank and work area.
Fig. 17
2
Position 2
– Bore an 8 mm (5/16 in.) hole.
1
Fig.11
18
Fig.
Position 3
– Standpipe (bend tube as necessary to clear moving
parts and cut to length).
203.2 mm (8in.)
Fig. 19
6
3
2004 Lexus RX330 3.3 Liter V-6
Legend for Figure 20
4 Standpipe
5 Upper Sealing Washer
6 Lower Sealing Washer
7 Lock Nut
8 Fuel Tank Sender Unit
4
5
6
7
Position 4 and 7
– Install fuel standpipe with outlet aligned as shown.
– Tighten lock-nut to 9.0 - 9.5 Nm (80 - 84 lb-in.)
– Return fuel sender to fuel tank.
Position 9, 10 and 11
– Pre-assemble rubber fuel line adapter with two hose
clamps.
– Install adapter on standpipe and secure inboard clamp.
– Insert fuel line fully into adapter and secure outboard
clamp.
– Tighten hose clamps to 1.0-1.4 Nm (8.8-12.4 lb-in.)
– Cover fuel line with loom.
Fig. 20
8
4
9
8
10
11
Fig. 21
ATTENTION
Observe Figure 22 for correct fuel line connecting.
– Use nylon wire ties to secure heater fuel line to existing
vehicle fuel line before installing the fuel tank.
– Assemble and install the fuel tank according to
manufacturer’s recommended service procedure.
Fig. 22
Fuel Pump
Installation
Position 12 and 13
– Mount Fuel pump to vehicle using existing stud and
P- clamp provided.
Fig. 23
7
13
12
2004 Lexus RX330 3.3 Liter V-6
CAUTION
Ensure fuel line does not come into contact with hot
exhaust components or other sources of extreme heat.
Ensure fuel line is kept away from moving parts.
ATTENTION
Fuel line must be cut using a sharp razor knife or razor.
DO NOT cut with side cutters, scissors or similar tools as
doing so will cause a restriction inside the fuel line.
Position 1, 2, 3, and 4
– Route fuel line over to fuel pump and cut to length.
– Connect fuel line to fuel pump inlet with rubber
adapter and two hose clamps. Tighten clamps to 1.01.4 Nm (8.8-12.4 lb-in.)
Fuel Line
and Cable
Installation
1
Fig. 24
5
3
4
6
2
7
Position 5, 6, 7, and 8
– Connect remaining section fuel line to fuel pump
outlet with rubber adapter and two hose clamps.
Tighten clamps to 1.0-1.4 Nm (8.8-12.4 lb-in.)
Position 9 and 10
– Route fuel pump harness to fuel pump following
vehicle fuel lines.
– Assemble fuel pump harness connector (assembly
instructions provided in kit) and connect to fuel pump.
FRONT
Fig. 25
Fuel Line
and Cable
Routing
Position 11, 12, 13, and 14
– Cover fuel line with loom.
– Route fuel line to heater mounting location following
vehicle fuel lines.
– Secure heater fuel line and wiring harness to vehicle
fuel lines as shown using nylon wire ties.
9
8
11
FRONT
Fig. 26
14
13
12
15
Position 15, 16, 17, and 18
– Connect fuel line to heater inlet with rubber adapter
and two hose clamps. Tighten clamps to 1.0-1.4 Nm
(8.8-12.4 lb-in.)
18
Fig. 27
8
10
16
17
2004 Lexus RX330 3.3 Liter V-6
Integration into the Coolant System
NOTE:
For an overview of the coolant circuit, turn to the back
section of this manual for a plumbing schematic.
1
NOTE:
Torque all hose clamps to 1.5 - 2.0 Nm (13 - 18 lb-in.).
Preparing
Heater
Hoses For
Connection
Position 1, 2 and 3
– Cut coolant supply hose to heat exchanger between
hose clamping pliers.
Fig. 28
3
2
Position 4, 5 and 6
– Install 90 degree coolant hose on heater outlet with
clamp.
4
5
6
Fig. 29
7
Position 7, 8 and 9
– Install 180 degree coolant hose on heater inlet with
clamp.
8
9
Fig. 30
Position 9, 10, 11 and 12
– Route heater inlet and outlet hoses between air box
bracket and engine.
– Cover hoses with loom where they come into contact
with air box bracket.
– Reposition coolant supply hose coming from engine as
shown.
– Connect heater inlet hose to coolant supply hose with
adapter and to hose clamps.
Position 13, 14, 15 and 4
– Connect heater outlet hose to hose going to heat
exchanger with adapter and two clamps.
9
9
Fig. 31
10 11 12
4
15 14
13
2004 Lexus RX330 3.3 Liter V-6
Exhaust System
Exhaust
System
1
Position 1and 2
– Install 90 degree exhaust elbow on heater.
– Tighten clamp to 5 - 5.5 Nm (44 - 49 lb-in.)
Fig. 32
Position 3 and 4
– Remove 216mm (8.5 in.) from exhaust tube.
– Cover exhaust tube with high temp wrap.
– Install exhaust tube on 90 degree elbow.
– Tighten clamp to 5 - 5.5 Nm (44 - 49 lb-in.)
2
3
4
Fig. 33
Position 4, 5 and 6
– Secure exhaust tube to oil cooler bracket with P-clamp
and new longer bolt.
5
4
Fig. 34
Position 4, 7 and 8
– Drill hole through lower splash shield and install high
temp doughnut.
– Route exhaust tube through hole in splash shield.
7
4
Fig. 35
10
6
8
2004 Lexus RX330 3.3 Liter V-6
Combustion
Air Intake
Combustion Air Intake Installation
1
Position 1 and 2
– Install split end of combustion air intake tube on heater
with narrow band hose clamp.
Fig. 36
2
Position 1 and 3
1
ATTENTION
The silencer must be pointed in a downward direction!
– Route combustion air intake tube in front of battery.
– Thread silencer into the end of the combustion air tube
– Secure combustion air intake tube to coolant lines with
nylon wire ties.
Fig. 37
11
3
2004 Lexus RX330 3.3 Liter V-6
Concluding Work
Power Connection
Position 1 and 2
– Connect heater power lead to the positive terminal of
the battery.
– Connect battery ground cable(s).
T
ON
FR
Fig. 38 Example only
1
2
Final Inspection and Initial Start-up
Final
Inspection
Initial Startup
Final Inspection
1. Check all fasteners to ensure system is secure.
2. Check routing of coolant lines and ensure coolant lines are securely tied and protected against chaffing and
related damage.
3. Check routing of air intake and exhaust lines and ensure lines are secure. Keep hot exhaust components away
from heat sensitive vehicle components and fuel lines.
4. Check routing of fuel lines and ensure fuel lines are securely tied and protected against chaffing and related
damage.
5. Check routing of wiring harnesses and ensure wiring harnesses are securely tied and protected against chaffing
and related damage.
6. Check for loose wiring connections and battery connections.
7. Check operation of vehicle heater fan with Webasto heater OFF.
Initial Start-up
1. Top off cooling system with coolant per engine/vehicle manufacturers recommendations.
2. Set interior heater control to maximum heat position (hot) and switch off air conditioning system.
3. Start the vehicle engine and run on fast idle for 5 minutes to purge any remaining air from the Webasto heater
and coolant system. While the engine is running check:
• hose connections for leaks.
• coolant level in expansion tank. Add coolant as needed.
4. Switch off the engine.
ATTENTION
More than one start-up attempt of the heater may be required to purge air from fuel system before heater will
start. Cycle heater Off and On after each failed start attempt until heater starts successfully. If heater should fault
to the lock-out mode, which is possible after three start attempts, refer to “Troubleshooting” and follow directions
under “Heater Lockout Reset Procedure.” No further start attempts are possible until the lockout condition is
cleared.
5. Switch on the Webasto heater by means of the instant heat button on timer and check:
• timer panel and instant heat indicator illuminates.
• circulating pump in operation.
• initiation of start-up sequence.
• successful start-up and operation.
6. Allow heater to run for 20 minutes or until coolant is heated to temperature. Re-tighten all hose clamps.
7. Install all vehicle components removed during heater installation.
8. Place Owners Manual and related documentation in vehicle.
12
2004 Lexus RX330 3.3 Liter V-6
13
Basic Troubleshooting
BlueHeatTM Coolant Heater
Basic Troubleshooting
General Information
This section describes troubleshooting procedures for the BlueHeat coolant heater within the scope of installation.
Troubleshooting is normally limited to the isolation of defective components and provides information on defective
wiring and connections.
Should the heater not function after completing the installation and initial start-up instructions, refer to the
following troubleshooting instructions and information to isolate and remedy the cause for malfunction.
In the event you are unable to remedy a malfunction after following these troubleshooting instructions or for
unanticipated malfunctions beyond what is covered in this troubleshooting section, please contact one of our
Webasto Technical Assistance Representatives for further instructions.
In the USA, call (800) 555-4518
In Canada, call (800) 667-8900
CAUTION
Advanced troubleshooting requires comprehensive knowledge about structure and theory of operation.
Advanced troubleshooting of the heater and components may only be performed by Webasto trained and
certified, professionals.
Before troubleshooting, check for and eliminate the following probable causes for trouble:
• power supply to heater is less than 10.5 volts at main power connections. Charge batteries and perform load
test to ensure proper battery performance.
• blown fuses.
• corrosion on battery terminals for heater, electrical wiring, connections and fuses.
• loose contacts or connectors, wrong crimping on connectors.
• ensure heater and components have been correctly installed following all pertaining installation instructions.
• shut down initiated by temperature limiter.
• heater control unit locked out. Refer to heater lockout reset procedure.
ATTENTION
After correction of a malfunction, a functional test has to be performed with heater installed on the vehicle.
Heater Lockout Reset Procedure
The BlueHeat is designed with a lockout safety feature built into the control unit. After 3 consecutive unsuccessful
startup attempts, the heater will lock itself out from any further start attempts. The heater may also enter the
lockout mode after experiencing an overheat condition.
Before troubleshooting the heater, ensure heater is not in the “Lockout” mode by performing the following reset
procedure:
1. Ensure timer or switch is in the ‘Off’ position. Turn timer or switch to the ‘On’ position. Remove main fuse F1
(15 Amp), reinsert after 5 seconds.
2. Cycle timer or switch off and then back on once more. Remove fuse F1 once again and reinsert after 5
seconds. Heater should attempt to start in 10 seconds after inserting fuse. Coolant temperature must be
below the lower threshold before heater will attempt to start.
14
BlueHeatTM Coolant Heater
Basic Troubleshooting
General Malfunction Symptoms
The following table lists possible malfunction symptoms and remedies.
Malfunction Symptom
Coolant heater switches
off automatically (Fault
lockout)
Heater expels black fumes
from exhaust
Probable Cause
Remedy
No combustion after start
or automatic repeat start
Switch off heater momentarily and switch on once
again
Flame extinguishes during
operation
Switch off heater momentarily and switch on once
again
Heater overheats
Check coolant lines for obstructions, closed valves
and kinks.
Check coolant level. Allow heater to cool down,
reset overheat limiter, switch off heater
momentarily and switch on once again
Vehicle electrical system
voltage too low
Charge battery
Switch off heater momentarily and switch on once
again
Combustion air and/or
exhaust tubing blocked
Check combustion and exhaust tubing for
obstructions
PC Diagnostics Interface Kit
CAUTION
Diagnostics equipment is intended for use by Webasto trained personnel at authorized Webasto Distributor,
Dealer and End User service facilities.
A PC Diagnostic Interface kit for the BlueHeat is available that allows for more thorough testing and troubleshooting
of the heater and its components beyond the scope of this installation manual. The diagnostic kit makes it possible
to read and remove (reset) stored malfunction codes from the BlueHeat memory.
The PC Diagnostic Interface Kit comes complete with connecting hardware, software and instructions for use with
any IBM/PC compatible computer. Also available are several interface connectors for use with Webasto heaters
equipped with internal diagnostic capabilities such as the BlueHeat.
In addition to working with stored malfunction codes, the PC Diagnostics Interface Kit allows you to perform several
other functions such as reading values while the heater is in operation or testing individual components. Printing
out malfunction codes is also available (User supplied printer required).
For further capabilities and instructions for use with the BlueHeat heater, see the instruction manual supplied with
the PC Diagnostics Interface Kit.
Order PC Diagnostics Interface Kit under part number 92542F. Kit does not include required adapter for the
BlueHeat and must be included in your order. Order adapter under part number 92566A.
15
Schematics
2004 Lexus RX330 3.3 Liter V-6
Wiring Schematic - Part 1
16
2004 Lexus RX330 3.3 Liter V-6
Schematics
Wiring Schematic - Part 2
17
Schematics
2004 Lexus RX330 3.3 Liter V-6
Plumbing Schematic
18
Webasto Product N.A., Inc.
Technical Assistance Hotline
USA:
(800) 555-4518
Canada: (800) 667-8900
Org. 07/2003
P/N 5000684A
www.webasto.us
www.techwebasto.com