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 ).
If DTC U0028 is stored at the same time as DTC U0114, troubleshoot DTC U0028 first, then recheck for DTC U0114.

Turn the ignition switch ON (II).
Check for Temporary DTCs or DTCs with the HDS.
Are DTC U0028 and U0114 indicated at the same time?

YES - Go to troubleshooting for DTC U0028.

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 gauge control module, the SH-AWD control unit, and the PCM.
Check for SH-AWD system DTCs with the HDS.
Is SH-AWD system DTC 41 and/or 77 indicated?

YES - Go to step 6.

NO - Go to step 11.
Turn the ignition switch LOCK (0).
Jump the SCS line with the HDS.
Disconnect SH-AWD control unit connector A (20P) (see SH-AWD CONTROL UNIT REPLACEMENT ).
Disconnect PCM connector A (44P)
Connect SH-AWD control unit connector terminal A10 to body ground with a jumper wire.

Fig 1: Checking Continuity Between SH-AWD Control Unit Connector Terminals A10 And A20
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between PCM connector terminals A36 and body ground.
Is there continuity?

YES - Go to step 12.

NO - Repair open in the wire between the PCM (A36) and the SH-AWD control unit, then go to step 14.

Fig 2: Checking Continuity Between PCM Connector Terminals A36 And Body Ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect SH-AWD control unit connector terminal A20 to body ground with a jumper wire.

Fig 3: Checking Continuity Between SH-AWD Control Unit Connector Terminals A20
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between PCM connector terminal A37 and body ground. (see SH-AWD CONTROL UNIT REPLACEMENT ).

Fig 4: Checking Continuity Between PCM Connector Terminals A36 And Body Ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Substitute a known-good SH-AWD control unit, then go to step 14 and recheck. If DTC U0114 is not indicated after substitution, replace the original SH-AWD control unit, then go to step 14. .

NO - Repair open in the wire between the PCM (A37) and the SH-AWD control unit, then go to step 14.
Reconnect all connectors.
Turn the ignition switch ON (II).
Reset the PCM with the HDS.
Do the 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 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.