DTC U0114: F-CAN Malfunction (PCM-SH-AWD Control Unit)

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Check for Temporary DTCs or DTCs with the HDS.
Are DTC U0073 and U0114 indicated at the same time?

YES -Go to DTC U0073: F-CAN Malfunction (BUS-OFF) .

NO -Go to step 3.
Clear the DTC with the HDS.
Check for Temporary DTCs or DTCs with the HDS.
Is DTC U0114 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the SH-AWD control unit and the PCM.
Check for communication to the SH-AWD system with the HDS.
Does the HDS communicate with the SH-AWD control unit?

YES -Go to step 6.

NO -Go to DLC CIRCUIT TROUBLESHOOTING .
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect SH-AWD control unit connector A (26P).
Disconnect PCM connector E (31P).
Check for continuity between PCM connector terminal E15 and SH-AWD control unit connector A (26P) terminal No. 11.

Fig 1: Checking Continuity Between PCM Connector Terminal E15 and SH-AWD Control Unit Connector A (26P) Terminal No. 11
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 11.

NO -Repair open in the wire between the PCM (E15) and the SH-AWD control unit, then go to step 12.
Check for continuity between PCM connector terminal E26 and SH-AWD control unit connector A (26P) terminal No. 10.

Fig 2: Checking Continuity Between PCM Connector Terminal E26 and SH-AWD Control Unit Connector A (26P) Terminal No. 10
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good SH-AWD control unit (see SH-AWD CONTROL UNIT REPLACEMENT ), then go to step 12 and recheck. If DTC U0114 is not indicated, replace the original SH-AWD control unit (see SH-AWD CONTROL UNIT REPLACEMENT ), then go to step 12.

NO -Repair open in the wire between the PCM (E26) and the SH-AWD control unit, then go to step 12.
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the PCM with the HDS.
Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
Check for Temporary DTCs or DTCs with the HDS.
Is DTC U0114 indicated?

YES -Check for poor connections or loose terminals at the gauge control module, the SH-AWD control unit, and the PCM, then go to step 1.

NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.