DTC U0100, U0101, U0122, U0128, U0131, U0132, U0151 (Gauge Control Module without CAN gateway)

DTC U0100  : Gauge Control Module Lost Communication with ENG/AT

DTC U0101  : Gauge Control Module Lost Communication with AT

DTC U0122  : Gauge Control Module Lost Communication with VSA Modulator-Control Unit

DTC U0128  : Gauge Control Module Lost Communication with EPB

DTC U0131  : Gauge Control Module Lost Communication with EPS Unit

DTC U0132  : Gauge Control Module Lost Communication with Adaptive Damper Control Unit

DTC U0151  : Gauge Control Module Lost Communication with SRS Unit

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• According to the detected DTC(s), check for the power circuit and the ground circuit of the control unit which cannot communicate with the gauge control module.
• Refer to the DTC shown on the display, then inspect the connectors and terminals based on the instructions.

DTC (Gauge Control Module)

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 and then the ON mode.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   U0100 Gauge Control Module Lost Communication with ENG/AT
   U0101 Gauge Control Module Lost Communication with AT
   U0122 Gauge Control Module Lost Communication with VSA Modulator-Control Unit
   U0128 Gauge Control Module Lost Communication with EPB
   U0131 Gauge Control Module Lost Communication with EPS Unit
   U0132 Gauge Control Module Lost Communication with Adaptive Damper Control Unit
   U0151 Gauge Control Module Lost Communication with SRS Unit

   Are any DTCs 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 gauge control module.

2. Open wire check (F-CAN_H line, F-CAN_L line)

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

   -2. Disconnect the receiving control unit connector.

   Gauge control module connector A (32P)

   -3. Disconnect the transmitting control unit connector(s).

   Refer to the DTC shown on the display, then disconnect the connector(s) based on the instructions (see table).

   U0100: Jump the SCS line with the HDS, and wait more than 1 minute.

   U0151: Do the 12 volt battery terminal disconnection procedure , and wait for at least 3 minutes.

   DTC	Connector
   U0100	PCM connector A (50P) *1/*3 PCM connector No. 2 (58P) *2
   U0101	TCM 50P connector
   U0122 U0128	VSA modulator-control unit 46P connector

   *1: L15B7/L15BA/L15BY engine

   *2: K20C1 engine

   *3: K20C2 engine

   DTC	Connector
   U0131	EPS control unit connector B (6P)
   U0132	Adaptive damper control unit 24P connector
   U0151	SRS unit connector A (39P)

   *1: L15B7/L15BA/L15BY engine

   *2: K20C1 engine

   *3: K20C2 engine

   -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 Gauge control module connector A (32P): disconnected Transmitting control unit connector(s) for indicated DTCs: disconnected

   DTC	Circuit name	Receiving control unit		Transmitting control unit
   		Connector	Terminal	Connector	Terminal
   U0100 *1/*3	F-CAN_H	Gauge control module connector A (32P)	No. 19	PCM connector A (50P)	No. 37
   	F-CAN_L		No. 20		No. 36
   U0100 *2	F-CAN_H	Gauge control module connector A (32P)	No. 19	PCM connector No. 2 (58P)	No. 15
   	F-CAN_L		No. 20		No. 27
   U0101	F-CAN_H	Gauge control module connector A (32P)	No. 19	TCM 50P connector	No. 3
   	F-CAN_L		No. 20		No. 11
   U0122 U0128	F-CAN_H	Gauge control module connector A (32P)	No. 19	VSA modulator-control unit 46P connector	No. 20
   	F-CAN_L		No. 20		No. 21
   U0131	F-CAN_H	Gauge control module connector A (32P)	No. 19	EPS control unit connector B (6P)	No. 3
   	F-CAN_L		No. 20		No. 1
   U0132	F-CAN_H	Gauge control module connector A (32P)	No. 19	Adaptive damper control unit 24P connector	No. 19
   	F-CAN_L		No. 20		No. 20
   U0151	F-CAN_H	Gauge control module connector A (32P)	No. 19	SRS unit connector A (39P)	No. 34
   	F-CAN_L		No. 20		No. 35

   *1: L15B7/L15BA/L15BY engine

   *2: K20C1 engine

   *3: K20C2 engine

   Is there continuity?

   YES 

   The F-CAN_H wire and the F-CAN_L wire are OK.

   Refer to the DTC shown on the display, then substitute or replace the control unit based on the instructions (see table).

   DTC	Operation for transmitting control unit
   U0100	Substitute a known-good PCM , then recheck. If DTC U0100 goes away after substitution, replace the original PCM .
   U0101	Substitute a known-good TCM , then recheck. If DTC U0101 goes away after substitution, replace the original TCM .
   U0122 U0128	Replace the VSA modulator-control unit .
   U0131	Substitute a known-good EPS control unit , then recheck. If DTC U0131 goes away after substitution, replace the original EPS control unit .
   U0132	Substitute a known-good adaptive damper control unit , then recheck. If DTC U0132 goes away after substitution, replace the original adaptive damper control unit .
   U0151	Substitute a known-good SRS unit , then recheck. If DTC U0151 goes away after substitution, replace the original SRS unit .

   NO 

   Repair an open in the F-CAN_H wire and/or the F-CAN_L wire between the gauge control module and the transmitting control unit.