2007 ISUZU KB P190 Wiring harness

Engine Mechanical – V6 Page 6A1–90
Page 6A1–90
5 Ensure all wiring connectors are fully engaged and if applicable, locked in place.
6 Ensure all wiring harnesses are correctly routed and attached securely in their retaining clips.
7 Ensure that all hoses and pipes ar e routed correctly and that any retaining clips are correctly installed.
8 After installation pull on any quick connect fittings to check that each is correctly installed.
9 Start and run the engine to c heck for correct operation.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–91
Page 6A1–91
3.11 Exhaust Manifold Assembly
Remove

Allow the engine to cool before commencing.

Disconnection of the battery affects
certain vehicle electronic systems, refer to
1.1 WARNING, CAUTION and NOTES before
disconnecting the battery.
1 Disconnect the battery negative terminal.
2 Remove the oxygen sensor harness connector (1) from the retaining bracket.
3 Disconnect the oxygen sensor wiring harness connector from the engine wiring harness connector
(2).
4 Unclip the oxygen sensor wiring harness retaining clip and move aside.
5 For the left-hand side: Remove the oil level indicator tube.
6 Raise the front of the vehicle and place on stands,
refer to Section 0A General Information .
7 Working from under the vehicle, remove the two exhaust manifold to exhaust pipe flange nuts, refer to
Section 6F Exhaust System - V6 .
Figure 6A1 – 56
8 Remove the three bolts attaching the exhaust manifold outer heat shield (1) to the exhaust manifold
(2).

Figure 6A1 – 57

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–94
Page 6A1–94
3.12 Camshaft Cover
Remove
1 Remove the intake manifold assembly, refer to 3.10 Intake Manifold Assembly – Complete .
2 For the left-hand side, remove the evaporative (EVAP) emission canister purge solenoid, refer to Section 6C1-3 Engine Management – V6 – Service Operations.
3 Remove the two bolts (1) attaching the engine wiring harness former to the rear of the cylinder heads.
4 Unclip the transmission v ent tube (2) from the engine
wiring harness.

Figure 6A1 – 61
5 Disconnect the oxygen sensor wiring harness connector (1) from the engine wiring harness (2), left-
hand shown, right-hand similar.

Figure 6A1 – 62

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–95
Page 6A1–95
6 Remove the bolt (1) attaching the ground connector
(2) to the cylinder head.
7 Fro the left-hand side, disconnect the engine coolant temperature (ECT) sensor wiring connector (3).
8 Unclip the engine wiring harness retaining lugs from the side of the camshaft cover.
Figure 6A1 – 63
9 For the right-hand side, remove the engine wiring harness retaining clip (1) from the engine control
module (ECM) bracket (2).
Figure 6A1 – 64
10 Disconnect the camshaft position (CMP) sensor wiring connector (1).
11 Unclip the engine wiring harness retaining lug (3) from the front of the camshaft cover.
12 Remove the ignition coil assemblies; refer to Section 6C1-3 Engine Management – V6 – Service
Operations .
13 Move the engine wiring harness clear of the camshaft cover.



Figure 6A1 – 65

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–99
Page 6A1–99
8 Remove Tool No. EN-46101 (1).
9 Tighten all remaining fasteners to the correct torque specification.




Engine ground connector bolt
torque specificat ion ............................................ 10.0 Nm
Engine wiring harness former attaching
bolt torque specification .......................... 12.0 – 16.0 Nm

Figure 6A1 – 74

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–242
Page 6A1–242

Plug the fuel feed hose after removal to
prevent dirt entering the pipe.
12 Disconnect the fuel pipe connector and injector harness connector.
13 Disconnect the fuel feed hose from the fuel rail (1),
refer to Section 6C Fuel system .
14 Pull out release bar (2) of the fuel injector harness
wiring connector (3).
15 Disconnect the fuel injector harness wiring connector from the fuel injector wiring harness (4).


Figure 6A1 – 411
16 To disconnect the throttle body connector (1) the following procedure must be followed.
17 Retract the throttle body wiring connector lock (3) while pressing the connector la tch in the direction of
the arrow (4).
18 Disconnect the throttle body wiring connector (1).
19 Release the throttle body connector wiring harness from its retaining clip (5).

Take care not to break the barbed retainer
pin (6), when removing the harness. Should
the pin be damaged it is vital that a new
harness retainer be fitted.
20 Remove the main wiring harness retainer pin (6) from the intake manifold by pushing from the front to the
rear using a suitable lengt h of 5mm steel rod or an
allen key.


Figure 6A1 – 412
21 Disconnect the PCV fresh air tube (1) from the upper intake manifold mounting clip (2) and remove the
fixing bolt (3).


Figure 6A1 – 413

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–244
Page 6A1–244
28 Remove the centre exhaust pipe (1), refer to
Section 6F Exhaust System - V6 .


Figure 6A1 – 417
29 Disconnect the two post-catalytic converter oxygen sensor wiring harness connectors, 1 each bank.



Figure 6A1 – 418
30 Disconnect the two pre-catalytic converter oxygen sensor wiring harness connectors, 1 each bank.
31 Remove the front exhaust flange nuts, three each bank.
32 Remove the front left-hand exhaust pipe from the rubber mount.

33 Remove the front exhaust pipes from the vehicle, for further information, refer to Section 6F Exhaust
System - V6 .

Figure 6A1 – 419
34 Remove the transfer case from t he vehicle (4WD Only), refer to Section 7D Transfer Case and Adaptor Housing .

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–247
Page 6A1–247
44 Remove the left-hand side engine mount (1),
(automatic transmission only).


Figure 6A1 – 426
45 Unclip the oil level s ensor harness from the heat
shield (1).
a Remove the heat shield retaining screw (2).
b Remove the lower starter motor attaching bolt (3).
c Remove the heat shield.
d Remove the upper starter motor retaining bolt (3).
46 Remove the starter motor from the engine block and lower the starter motor as far as possible to gain
access to the wiring harness connections.
47 Remove the starter moto r, (automatic transmission
only).

Figure 6A1 – 427
48 Reinstall the left-hand side engine mount (1), (automatic transmission only).
49 Remove the transmission assembly, refer to Section 7C1 Automatic – 4L60E – General
Information .



Figure 6A1 – 428

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ISUZU KB P190 2007