Chart B3: CCDIC Problem
You are here because odometer problem has been isolated to CCDIC components or related data link circuitry.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
Test Number 1) This step restores circuit No. 800E into data link circuit. If odometer reads zero, the circuit is shorted to ground or voltage.
Test Number 2) This step restores circuit No. 800C into data link circuit. If odometer continues to read correct mileage, the CCDIC must be replaced. If zeros return to the IPC, circuit No. 800C is at fault.
Test Number 3) This step isolates the area between ECM pin 2A9 and ALDL pin "M".
Test Number 4) This step isolates the fault to the CCDIC or circuit 800.