DTC 86-01

DTC 86-01: F-CAN Bus-off Malfunction

NOTE: IMA components are located in the area. Make sure you have read the Service Precautions in the IMA system before performing repairs or service.

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
4. Check for DTCs with the HDS.

Is DTC 86-01 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals between PCM connector A (44P) and the ABS modulator-control unit 25P connector. Refer to intermittent failures troubleshooting.

5. Turn the ignition switch to LOCK (0).
6. Short the SCS line with the HDS.
7. Disconnect PCM connector A (44P).
8. Disconnect the HDS from the data link connector (DLC).
9. Disconnect the ABS modulator-control unit 25P connector.
10. Disconnect the servo unit 25P connector.
11. Disconnect SRS unit connector A (28P).
12. Disconnect EPS control unit connector D (28P).
13. Disconnect the gauge control control module (tach) 36P connector.
14. With TPMS: Disconnect the TPMS control unit 20P connector.
15. Turn the battery module switch OFF.
16. Remove the IPU lid.
17. Remove the BCM module (see page 12-188).
18. Disconnect the MCM 20P connector.
19. Check for continuity between ABS modulator-control unit 25P connector terminals No. 1 and No. 17 and body ground individually.





Is there continuity?

YES - Repair short to body ground in the wire between the PCM, the data link connector (DLC), the servo unit, the SRS unit, the EPS control unit, the gauge control module (tech), the TPMS control unit (if equipped), the BCM module, the MCM, and the ABS modulator-control unit.

NO - Go to step 20.

20. Check for continuity between ABS modulator-control unit 25P connector terminals No. 1 and No. 17.





Is there continuity?

YES - Repair short in the wires between ABS modulator-control unit 25P connector terminals No. 1 (CAN-H line) and No. 17 (CAN-L line).

NO - Go to step 21.

21. Check for continuity between ABS modulator-control unit 25P connector terminals and PCM connector A (44P) terminals (see table).





Is there continuity?

YES - Check for loose terminals in the ABS modulator-control unit 25P connector. If necessary, substitute a known-good ABS modulator-control unit, and retest.

NO - Repair open in the wire between the PCM and the ABS modulator-control unit.