Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check all connectors(and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Has a problem been found ?
 | ▶ Repair or replace as necessary and then, Go to "Verification of Vehicle Repair" procedue. ▶ In case LDWS ECU is replaced, Refer to "Component Inspection" procedure in DTC 1363 and perform LDWS Reference Point Calibration in the "Vehicle S/W Management" with GDS. |
 | ▶ Go to "CAN communication line inspection" procedure. |
Ignition "OFF".
Disconnect Engine ECU/ECS ECU/HECU/EPB ECU/Cluster ECU connector and LDWS ECU connector.
Measure resistance between CAN-High terminal(Pin No. ETM Reference) of Engine ECU/ECS ECU/HECU/EPB ECU/Cluster ECU harness connector and CAN-High terminal Pin No.1 of LDWS ECU harness connector.
Measure resistance between CAN-Low terminal(Pin No. ETM Reference) of Engine ECU/ECS ECU/HECU/EPB ECU/Cluster ECU harness connector and CAN-Low terminal Pin No.7 of LDWS ECU harness connector.
Specification : Below approx. 1Ω
Is the measured resistance within specifications?
| ▶ Repair or replace as necessary and then, Go to "Verification of Vehicle Repair" procedue. ▶ In case LDWS ECU is replaced, Refer to "Component Inspection" procedure in DTC 1363 and perform LDWS Reference Point Calibration in the "Vehicle S/W Management" with GDS. |
| ▶ Carefully re-do this troubleshooting guide steps and then, Go to "Verification of Vehicle Repair" procedue. ▶ In case LDWS ECU is replaced, Refer to "Component Inspection" procedure in DTC 1363 and perform LDWS Reference Point Calibration in the "Vehicle S/W Management" with GDS. |
