Isuzu KB P190. Manual — part 1269

8A-138 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JH1-TC (LHD)

Sheet 1/2

RTW78AXF004601

ELECTRICAL-BODY AND CHASSIS 8A-139

CIRCUIT DIAGRAM 4JH1-TC (LHD)

Sheet 2/2

RTW78AXF004701

8A-140 ELECTRICAL-BODY AND CHASSIS

REMOVAL AND INSTALLATION

ECM (ENGINE CONTROL MODULE);

C24SE

Removal

1. Lift both the ECM harness connector locking levers and

remove the two harness connectors form the ECM.

2. Remove the four socket head screws securing the ECM to

the mounting bracket.

3. Remove the ECM from the engine compartment.

4. Pull out the ECM.

5. Disconnect both red and tan connectors.

Refer to the Section 6E-ENGINE of this Manual.

IMPORTANT: The replacement ECM must be programmed.
“SPS (Service Programming System) and immobilizer
programming (if equipped) is/are necessary”

Installation

Follow the removal procedure in the reverse order to install the
ECM.
Pay close attention to the important points mentioned in the
following paragraphs.

Connector

Be absolutely sure that ECM is securely connected.
This will prevent a poor contact and open circuit.

ELECTRICAL-BODY AND CHASSIS 8A-141

REMOVAL AND INSTALLATION

ECM (ENGINE CONTROL MODULE);

4JH1-TC

Removal

1. Remove the passenger side front seat – refer to Section 10

CAB.

2. Remove the passenger side front door opening scuff plate.

3. Raise the carpet to gain access to the four hex-head bolts

securing the ECM and ECM cover to the floor pan.

4. Remove the four hex-head bolts.

5. Pull the two harness connector locks away from the

harness connectors and then remove the connectors form

the ECM.

6. Remove the ECM from the vehicle.

Refer to the Section 6E-ENGINE of this Manual.

IMPORTANT: The replacement ECM must be programmed.
“SPS (Service Programming System) and immobilizer
programming (if equipped) is/are necessary”

Installation

Follow the removal procedure in the reverse order to install the
ECM.
Torque passenger seat securing bolts to the specified value –
refer to Section 10 CAB
Pay close attention to the important points mentioned in the
following paragraphs.

Connector

Be absolutely sure that ECM is securely connected.
This will prevent a poor contact and open circuit.