INTRODUCTION POWERTRAIN CONTROL MODULE PIN IDENTIFICATION

3/27/2014
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2002 Isuzu Axiom 3.5L Eng Base
ENGINE CONTROLS - PIN VOLTAGE CHARTS
INTRODUCTION
Pin voltage (value) charts are used for diagnosing intermittent symptoms and faults that are unable
to be resolved during self-diagnostics. Pin voltage tests ensure Powertrain Control Module (PCM) is
receiving and transmitting proper voltage and other signals. Before performing tests, ensure engine
mechanical condition has been thoroughly inspected and self-diagnostics have been attempted.
Available Technical Service Bulletins (TSBs) may also be helpful in correcting a hard to diagnose
problem.
POWERTRAIN CONTROL MODULE PIN IDENTIFICATION & VOLTAGE CHARTS
CAUTION: When battery is disconnected,
vehicle computer and memory systems may lose
memory data. Driveability problems may exist until
computer systems have completed a relearn
cycle. See COMPUTER RELEARN
PROCEDURES article in GENERAL
INFORMATION before disconnecting battery.
NOTE: Unless stated otherwise in testing
procedures, preform all voltage tests using a
Digital Volt-Ohmmeter (DVOM) with a minimum
10-megohm input impedance. Carefully
backprobe PCM harness connector using Wiring
Harness Tester Set (J35616-A/BT-8637) to avoid
connector damage. Voltage readings may vary
slightly due to battery condition or charging rate.
NOTE: PCM may also be referred to as
ECM. Generator may also be referred to as
alternator.
POWERTRAIN CONTROL MODULE PIN IDENTIFICATION & VOLTAGE CHARTS >
AXIOM 3.5L, PASSPORT, RODEO & RODEO SPORT 3.2L
NOTE: For Axiom, Passport and Rodeo PCM
harness connector and terminal identification,
see Fig 1 -Fig 8 .
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Fig 1: Identifying Blue Powertrain Control Module Harness Connector E-34 Terminals & Pins No. 120 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 2: Identifying Blue Powertrain Control Module Harness Connector E-34 Terminals & Pins No.
21-40 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 3: Identifying Blue Powertrain Control Module Harness Connector E-34 Terminals & Pins No.
41-60 (Axiom, Passport , Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 4: Identifying Blue Powertrain Control Module Harness Connector E-34 Terminals & Pins No.
61-80 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 5: Identifying Red Powertrain Control Module Harness Connector E-35 Terminals & Pins No. 120 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 6: Identifying Red Powertrain Control Module Harness Connector E-35 Terminals & Pins No. 2140 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 7: Identifying Red Powertrain Control Module Harness Connector E-35 Terminals & Pins No. 4160 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
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Fig 8: Identifying Red Powertrain Control Module Harness Connector E-35 Terminals & Pins No. 6180 (Axiom, Passport, Rodeo & Rodeo Sport 3.2L)
Courtesy of ISUZU MOTOR CO.
TYPICAL SCAN TOOL VALUES > TEST CONDITIONS
NOTE: While limited diagnostic information is
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available, vehicle manufacturer does not support
diagnostic information using aftermarket scan
tools. To properly diagnose vehicle, it is
recommended to use TECH 2 scan tool. Ensure
that scan tool is functioning properly. A scan tool
that displays faulty data will lead to improper
diagnosis, and unnecessary replacement of
parts.
Use typical scan tool values only after On-Board-II Diagnostic (OBD-II) system check has been
performed, ensure no DTCs were stored in memory and it has been determined that on-board
diagnostics are functioning properly. Typical scan tool values represent values found on a normally
running vehicle, and can aid in diagnosing vehicle with poor engine performance. If after performing
OBD-II system check, verify scan tool data. If no problem is found with scan tool data and symptom
persists repair by symptom. See TROUBLE SHOOTING - NO CODES article.
The following conditions must be met before testing:
Engine at normal operating temperature.
Engine at idle (closed throttle).
Transmission in Park or Neutral.
Accessories off.
A/C system off.
Closed-loop operation.
TYPICAL SCAN TOOL VALUES > SCAN TOOL DATA VALUES > AXIOM 3.5L
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Fig 1: Typical Scan Tool Values (Axiom 3.5L - 1 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 2: Typical Scan Tool Values (Axiom 3.5L - 2 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 3: Typical Scan Tool Values (Axiom 3.5L - 3 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 4: Typical Scan Tool Values (Axiom 3.5L - 4 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 5: Typical Scan Tool Values (Axiom 3.5L - 5 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 6: Typical Scan Tool Values (Axiom 3.5L - 6 Of 7)
Courtesy of ISUZU MOTOR CO.
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Fig 7: Typical Scan Tool Values (Axiom 3.5L - 7 Of 7)
Courtesy of ISUZU MOTOR CO.
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