Diesel Data: Automotive Repair

P1621

DTC P1621: Immobilizer Communication Line Error

Wiring Diagram

Immobilizer Control System Wiring Circuit Diagram

NOTE: For more details about power supply circuit, ground wire circuit, and each circuit for ECM, BCM, ABS /ESP(R) control module, keyless start control module and combination meter, refer to System Circuit Diagram.

Immobilizer Control System Wiring Circuit Diagram:






Detecting Condition and Trouble Area






Troubleshooting

Step 1-5: