Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 384

6E–566

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Positive Crankcase Ventilation

(PCV) Valve

Removal Procedure

1. Remove the vacuum hose at the PCV valve.

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Slide the clamp back to release the hose.

2. Pull the PCV valve from the rubber grommet in the

right valve cover.

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Inspection Procedure

Before inspecting the PCV valve, make sure that the
hoses are connected properly and are in good condition.
Also check that the oil pan and rocker cover gaskets are
sealing properly.

PCV Valve

1. Run the engine at normal operating temperature.
2. Disconnect the valve from the rocker cover.

RESULT: A hissing noise should be heard from the
valve. If no noise is heard, the PCV valve or hose is
plugged.

3. Remove the PCV valve from the engine.

a. Blow air into the rocker cover side of the valve.
RESULT: Air should pass freely.
b. Blow air into the air cleaner side of the valve.
RESULT: Air should not pass through the valve.

4. Re-install the PCV valve and remove the oil filler cap.

RESULT: A small vacuum should be felt at the oil filler
hole.

Installation Procedure

1. Push the PCV valve into the rubber grommet in the

left valve cover.

2. Install the vacuum hose on the PCV valve and secure

the vacuum hose with the clamp.

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Wiring and Connectors

Wiring Harness Service

The control module harness electrically connects the
control module to the various solenoids, switches and
sensors in the vehicle engine compartment and
passenger compartment.
Replace wire harnesses with the proper part number
replacement.
Because of the low amperage and voltage levels utilized
in powertrain control systems, it is essential that all wiring
in environmentally exposed areas be repaired with crimp
and seal splice sleeves.
The following wire harness repair information is intended
as a general guideline only.  Refer to 

Chassis Electrical

section for all wire harness repair procedures.

Connectors and Terminals

Use care when probing a connector and when replacing
terminals.  It is possible to short between opposite
terminals.  Damage to components could result.  Always
use jumper wires between connectors for circuit
checking.  NEVER probe through Weather-Pack seals.
Use an appropriate connector test adapter kit which
contains an assortment of flexible connectors used to
probe terminals during diagnosis.  Use an appropriate
fuse remover and test tool for removing a fuse and to
adapt the fuse holder to a meter for diagnosis.
Open circuits are often difficult to locate by sight because
oxidation or terminal misalignment are hidden by the
connectors.  Merely wiggling a connector on a sensor, or
in the wiring harness, may temporarily correct the open
circuit.  Intermittent problems may also be caused by
oxidized or loose connections.
Be certain of the type of connector/terminal before
making any connector or terminal repair.  Weather-Pack
and Com-Pack III terminals look similar, but are serviced
differently.

6E–567

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

PCM Connectors and Terminals

Removal Procedure

1. Remove the connector terminal retainer.
2. Push the wire connected to the affected terminal

through the connector face so that the terminal is
exposed.

3. Service the terminal as necessary.

Installation Procedure

1. Bend the tab on the connector to allow the terminal to

be pulled into position within the connector.

2. Pull carefully on the wire to install the connector

terminal retainer.

Wire Harness Repair: Twisted

Shielded Cable

Removal Procedure

1. Remove the outer jacket.
2. Unwrap the aluminum/mylar tape.  Do not remove the

mylar.

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3. Untwist the conductors.

4. Strip the insulation as necessary.

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Installation Procedure

1. Splice the wires using splice clips and rosin core

solder.

2. Wrap each splice to insulate.
3. Wrap the splice with mylar and with the drain

(uninsulated) wire.

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6E–568

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

4. Tape over the whole bundle to secure.

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Twisted Leads

Removal Procedure

1. Locate the damaged wire.
2. Remove the insulation as required.

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Installation Procedure

1. Use splice clips and rosin core solder in order to splice

the two wires together.

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2. Cover the splice with tape in order to insulate it from

the other wires.

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6E–569

6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

3. Twist the wires as they were before starting this

procedure.

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4. Tape the wires with electrical tape.  Hold in place.

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Weather-Pack Connector

Tools Required

J 28742-A Weather-Pack II Terminal Remover

Removal Procedure

A Weather-Pack connector can be identified by a rubber
seal at the rear of the connector.  This engine room
connector protects against moisture and dirt, which could
form oxidation and deposits on the terminals.  This
protection is important, because of the low voltage and
the low amperage found in the electronic systems.

1. Open the secondary lock hinge on the connector.

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2. Use tool J 28742-A or the equivalent to remove the

pin and the sleeve terminals.  Push on J 28742-A to
release.

NOTE: Do the use an ordinary pick or the terminal may
be bent or deformed.  Unlike standard blade terminals,
these terminals cannot be straightened after they have
been improperly bent.

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