DTC U0114, U0122, U0128, U0131, U0151, U0155, U129E (PGM-FI System)

DTC U0114  : F-CAN Malfunction (PCM-AWD Control Unit)DTC U0122  : F-CAN Malfunction (PCM-VSA Modulator-Control Unit)DTC U0128  : F-CAN Malfunction (PCM-Electric Parking Brake Control Unit)DTC U0131  : F-CAN Malfunction (PCM-EPS Control Unit)DTC U0155  : F-CAN Malfunction (PCM-Gauge Control Module)DTC U129E  : F-CAN Malfunction (PCM-Power Control Unit (PCU))

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below.
• The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit.

  (the grounding inspection and the power source inspection on each control unit are required prior to this checking process)

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   U0114 F-CAN Malfunction (PCM - AWD Control Unit)
   U0122 F-CAN Malfunction (PCM-VSA Modulator-Control Unit)
   U0128 F-CAN Malfunction (PCM-Electric Parking Brake Control Unit)
   U0131 F-CAN Malfunction (PCM - EPS Control Unit)
   U0155 F-CAN Malfunction (PCM-Gauge Control Module)
   U129E F-CAN Malfunction (PCM-Power Control Unit (PCU))

   Is DTC of which indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmitting control units, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot .

2. Open wire check (F-CAN L, F-CAN H lines)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the receiving control unit connector.

   NOTE:  Short the SCS to the ground when removing the PCM connector (s).

   PCM connector A (51P)

   -3. Disconnect the transmitting control unit connectors.

   (Refer to the DTC code shown on the display, and then disconnect the connector (s) based on the instructions in the table below.)

   • AWD control unit 24P connector
   • VSA modulator-control unit 21P connector
   • Electric parking brake control unit 30P connector
   • EPS control unit connector B (6P)
   • Gauge control module 32P connector
   • Keyless access control unit connector C (20P)

   -4. Check for continuity between the receiving control unit and the transmitting control unit on the F-CAN H circuit and the F-CAN L circuit.

   Test condition	Vehicle OFF (LOCK) mode
   	Receiving control unit: disconnected

   Transmission control unit which indicated DTC: disconnected

   DTC	CIRCUIT NAME	RECEIVING CONTROL UNIT	TRANSMITTING CONTROL UNIT
   U0114 F-CAN Malfunction (PCM - AWD Control Unit)	F-CAN H	PCM connector A (51P) No. 3	AWD control unit 24P connector No. 14
   	F-CAN L	PCM connector A (51P) No. 4	AWD control unit 24P connector No. 24
   U0122 F-CAN Malfunction (PCM-VSA Modulator-Control Unit)	F-CAN H	PCM connector A (51P) No. 3	VSA modulator-control unit 21P connector No. 8
   	F-CAN L	PCM connector A (51P) No. 4	VSA modulator-control unit 21P connector No. 15
   U0128 F-CAN Malfunction (PCM-Electric Parking Brake Control Unit)	F-CAN H	PCM connector A (51P) No. 3	Electric parking brake control unit 30P connector No. 30
   	F-CAN L	PCM connector A (51P) No. 4	Electric parking brake control unit 30P connector No. 29
   U0131F-CAN Malfunction (PCM - EPS Control Unit)	F-CAN H	PCM connector A (51P) No. 3	EPS control unit connector B (6P) No. 4
   	F-CAN L	PCM connector A (51P) No. 4	EPS control unit connector B (6P) No. 3
   U0155 F-CAN Malfunction (PCM-Gauge Control Module)	F-CAN H	PCM connector A (51P) No. 3	Gauge control module 32P connector No. 21
   	F-CAN L	PCM connector A (51P) No. 4	Gauge control module 32P connector No. 22
   U129E F-CAN Malfunction (PCM-Power Control Unit (PCU))	F-CAN H	PCM connector A (51P) No. 3	Keyless access control unit connector C (20P) No. 2
   	F-CAN L	PCM connector A (51P) No. 4	Keyless access control unit connector C (20P) No. 12

   Is there continuity?

   YES 

   The F-CAN L and F-CAN H wires are OK at this time, replace the transmitting control unit. (Refer to the DTC code shown on the display, and then replace the control unit based on the instructions in the table below.)

   DTC Description	TRANSMITTING CONTROL UNIT
   U0114 F-CAN Malfunction (PCM - AWD Control Unit)	AWD control unit
   U0122 F-CAN Malfunction (PCM-VSA Modulator-Control Unit)	VSA Modulator-Control Unit
   U0128 F-CAN Malfunction (PCM-Electric Parking Brake Control Unit)	Electric Parking Brake Control Unit
   U0131 F-CAN Malfunction (PCM - EPS Control Unit)	EPS Control Unit
   U0155 F-CAN Malfunction (PCM-Gauge Control Module)	Gauge control module
   U129E F-CAN Malfunction (PCM-Power Control Unit (PCU))	Keyless access control unit

   NO 

   Repair an open in the F-CAN L and/or F-CAN H wires between the receiving control unit and the transmitting control unit.