Diagnosis Procedure
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check the harness and repair the root cause.
3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check the harness and repair the root cause.
4.CHECK ECM AND BCM TERMINATION CIRCUIT
1. Remove the ECM and the BCM.
2. Check the resistance between the ECM terminals.
3. Check the resistance between the BCM terminals.
Is the measurement value within the specification?
YES >> GO TO 5.
NO >> Replace the ECM and/or the BCM.
5.CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
6.CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect one of the unit connectors of CAN communication system.
NOTE: ECM and BCM have a termination circuit. Check other units first.
4. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced.
NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.
CAN SYSTEM (TYPE 1)
DTC/CIRCUIT DIAGNOSIS
Diagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the BCM for damage, be ...
Diagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and connectors for damage, bend ...
U0140 Lost communication (BCM)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0140
Lost Communication With Body
Control Module
When the ignition switch is ON,
TCM is unable to receive the
CAN communications signal
from BCM continuously ...
Parking brake control
Exploded View
1. Parking brake lever assembly 2. Adjusting nut 3. Parking brake switch
4. Front cable 5. Rear cable (LH) 6. Rear cable (RH)
Removal and Installation
REMOVAL
Remove rear wheel and tire assemblies using power tool. Refer to WT
"Adjustment".
Remove the center ...