DTC Troubleshooting: 86-24, 86-25

DTC 86-24:	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, then turn it ON (II) again.

4.	Test-drive the vehicle. Drive the vehicle at 10 km/h (7 mph) or more.

5.

Check for DTCs with the HDS. Is 86-24, and/or 86-25 DTC indicated? YES - Go to 6. NO - Intermittent failure, the system is OK at this time. Check for loose terminals between the ECM/PCM connector A (44P), the gauge control module (tach) connector (36P) and the ABS modulator-control unit 25P connector. Refer to intermittent failures troubleshooting.n

6.	Turn the ignition switch OFF.

7.	Short the SCS line with the HDS.

8.	Disconnect ECM/PCM connector A (44P).

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 A (44P) terminal (see table). Sign  Connector Terminal No.  ABS Modulator-control Unit  ECM/PCM  CAN-L  17  37  CAN-H  1  36    Is there continuity? YES - Check for loose terminals in the ECM/PCM connector A (44P) and at the 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: R18A1 engine model, K20Z2 engine model. If DTCs are indicated, replace the ABS modulator-control unit: Except K20Z2 engine model, K20Z2 engine model.n NO - Repair open in the wire between the ECM/PCM and the ABS modulator-control unit.n