2007 ISUZU KB P190 Workshop Repair Manual

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ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–11

Figure 6C1-2 – 4

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Page 3290 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–12

3.2 ECM Connector End Views
Engine Control Module Connector E-60

Figure 6C1-2 – 5
Terminal / Pin Wire Colour Circuit
Descriptio

Page 3291 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–13

E-60–27 Not Used
E-60–28 Not Used
E-60–29 Not
Used
E-60–30 Not Used
E-60–31 Y ETC_NEG TAC Motor Control (Negative

Page 3292 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–14

Engine Control Module Connector C-56

Figure 6C1-2 – 6
Terminal / Pin Wire Colour Circuit
Description Function
C-56–1 P/Y PW

Page 3293 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–15

C-56–28 Not Used
C-56–29 V HI_SIG_3 B1S2 O2 Sensor High Signal (Bank 1 Sensor 2)
C-56–30 Not Used
C-56–31 R/W CRANK_REQ

Page 3294 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–16

3.3 Engine Control Connector End Views

Figure 6C1-2 – 7

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ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–17

Figure 6C1-2 – 8

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Page 3296 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Engine Management – V6 – Diagnostics Page 6C1-2–18

4 Diagnostics Starting Point
4.1 Basic Requirements
Basic Knowledge Required

A lack of basic understanding regarding
electronics, el

Engine Management – V6 – Diagnostics Page 6C1-2–18

4 Diagnostics Starting Point
4.1 Basic Requirements
Basic Knowledge Required

A lack of basic understanding regarding
electronics, electrical wiring circuits and use
of electrical circuit testing tools when
performing an engine management system
diagnostic procedure could result in incorrect
diagnostic results or damage to engine
management system components.
Understanding of the following is required to perform the diagnostic procedures detailed in this Section. Refer to 8A
Electrical - Body and Chassis and to Basic Tools Required.
• Basic electronics,
• Electrical wiring circuits,
• Electrical circuits testing, and
• Correct use of the basic engine management system diagnostic tools.
In addition, understanding of the engine management system is essential to prevent misdiagnosis and component
damage. Refer to 6C1-1 Engine Management – V6 – General Information.
Basic Tools Required

Use of incorrect electrical circuit diagnostic
tools when performing the Engine
Management diagnostic procedures could
result in incorrect diagnostic results or
damage to engine management system
components.
The following electrical circuit testing tools are required to perform the diagnostic procedures detailed in this Section.
• Tech 2,
• Test lamp, refer to 8A Electrical - Body and Chassis, and
• Digital multimeter with 10 M Ω impedance, refer to 8A Electrical - Body and Chassis.
4.2 Diagnostic Precautions
The following precautions must be observed when performing the powertrain diagnostic procedure, otherwise incorrect
diagnostic results or damage to engine management system components will occur:
• Disconnection of the battery affects certain vehicle electronic systems. Refer to 6D1-3 Battery – V6 before
disconnecting the battery.
• Disconnect the battery negative lead when performing the following procedures:
− Disconnecting the ECM connectors, or
− Charging the battery.
• Disconnect the battery terminal lead and the ECM connectors before attempting any electric arc welding on the
vehicle.

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