37. DTC: P1651, Malfunction Indicator Light Control Circuit Trouble (see Table 1-50) Table 1-50 65 S/N Operation Test Results Actions 1 Connect the diagnostic instrument and adapter, and turn the ignition switch to ON. Next step 2 Carry out action tests for the MIL of the engine with a diagnostic instrument. Check if it is always keep dark or light. Yes Next step No Normal 3 Check for open circuit or short to ground at the power supply end of the engine MIL. Yes Repair or replace harness No Next step 4 Check for open circuit or short to power supply or ground between the pin 29# of the engine MIL (control end) and the 29# of the ECU with a multimeter.
Yes Repair or replace harness No Diagnosis help