DTC 86-24

DTC 86-24: F-CAN Communication with Engine Malfunction

DTC 86-25: F-CAN Communication with Engine Malfunction

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF.
4. Test-drive the vehicle. Drive the vehicle at 7 mph (10 km/h) or more.
5. Check for DTCs with the HDS.

Is 86-24, and/or 86-25 DTC indicated?

YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals between the ECM/PCM connector E (31P) and the ABS modulator control unit 25P connector. Refer to intermittent failures troubleshooting.

6. Turn the ignition switch OFF.
7. Short the SCS line with the HDS.
8. Disconnect ECM/PCM connector E (31P).
9. Disconnect the ABS modulator-control unit 25P connector.
10. Check for continuity between ABS modulator control unit 25P connector terminal and ECM/PCM connector E (31P) terminal (see table).





Is there continuity?

YES - Check for loose terminals in the ECM/PCM connector E (31P) and at ABS modulator-control unit 25P connector. If necessary, substitute a known-good ECM/PCM then go to step 1 and recheck. If no DTCs are indicated, replace the original ECM/PCM. If DTCs are indicated, replace the ABS modulator-control unit.

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