Powertrain Management

DTC P0602

DTC Detecting Condition and Trouble Area

NOTE:

After reprogramming of ECM is executed, if the DTC P0602 is indicated, it is possible that the reprogramming of ECM is not completed correctly.






DTC Confirmation Procedure

1) Turn ignition switch to ON position for 10 sec.

DTC Troubleshooting



1. DTC recheck

Clear DTC. DTC Clearance
Turn OFF ignition switch.
Perform DTC confirmation procedure, and check DTC.

Is DTC P0602 still detected?
YES
Go to Step 2.
NO
Check for intermittent trouble.

2. ECM reprogramming check

Was reprogramming of ECM executed?
YES
Execute reprogramming of ECM correctly once again.
NO
Go to Step 3.

3. ECM power and ground circuit check

Check ECM power and ground circuit. Component Tests and General Diagnostics

Is it in good condition?
YES
Repair or replace defective wire harness.
NO
Substitute a known-good ECM and recheck.