Page 761 of 4264
ELECTRICAL-BODY AND CHASSIS 8A-103
CIRCUIT DIAGRAM 4JA1-TC Sheet 1/2
RTW48AXF031301
Page 762 of 4264
8A-104 ELECTRICAL-BODY AND CHASSIS
CIRCUIT DIAGRAM 4JA1-TC Sheet 2/2
RTW48AXF031401
Page 763 of 4264
ELECTRICAL-BODY AND CHASSIS 8A-105
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 immobiliser
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.
Page 764 of 4264
8A-106 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION
ECM (ENGINE CONTROL MODULE):
6VE1
Removal
1. Pull both the red ECM harness connector locks toward the
front of the vehicle, and remove the two harness connectors
form the ECM.
2. Remove the four hex-head screws securing the ECM to the
common chamber.
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 immobiliser
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.
Page 765 of 4264

ELECTRICAL-BODY AND CHASSIS 8A-107
REMOVAL AND INSTALLATION
ECM (ENGINE CONTROL MODULE):
4JA1-TC / 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 floorpan
.
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 immobiliser
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.
Page 766 of 4264
8A-108 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION
FUEL PUMP
Removal
1. Remove the fuel tank.
Refer to the Section 6C-ENGINE FUEL of this Manual.
Disconnect the fuel pipe.
Installation
Follow the removal procedure in the reverse order to install the
fuel pump.
Pay close attention to the important points mentioned in the
following paragraphs.
Rubber Seal
Be absolutely sure that the fuel pump rubber seals correctly
seated.
Connector
Be absolutely sure that the fuel pump connector is securely
connected.
This will prevent a poor contact and an open circuit.
Page 767 of 4264
ELECTRICAL-BODY AND CHASSIS 8A-109
EXHAUST GAS RECALCULATION (EGR): 4JA1-L ONLY
PARTS LOCATION (RHD)
RTW48AXF0136 & RTW48AMF000101
Page 768 of 4264
8A-110 ELECTRICAL-BODY AND CHASSIS
PARTS LOCATION (RHD)
RTW48AXF013701