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Multi-Plex Control System (Diagnostic Codes): Other Honda CR-V IV

Communication Devices 75 illustrations ~10829 words

Repair verification

  1. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0029 F-CAN MALFUNCTION (BUS-OFF (PCM))

Is DTC U0029 indicated?

YES : If the PCM was updated, substitute a known-good PCM See PCM UPDATE or PCM REMOVAL AND INSTALLATION , then recheck. If the PCM was substituted, go to step 1 .

NO : If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM UPDATE or PCM REMOVAL AND INSTALLATION . If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

Scheme 70

Scheme 70: DTC U0029: F-CAN Communication Line Error
Scheme 70: DTC U0029: F-CAN Communication Line Error
DTC DescriptionDTC
U0029 F-CAN Communication Line Error
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0029 F-CAN Communication Line Error Is DTC U0029 indicated? YES : «GO TO DLC CIRCUIT TROUBLESHOOTING»(ref-595375-S01818375202014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 71

Scheme 71: DTC U0100: Gauge Control Module Lost Communication With PCM
Scheme 71: DTC U0100: Gauge Control Module Lost Communication With PCM
DTC DescriptionDTC
U0100 Gauge Control Module Lost Communication With PCM

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

Scheme 72

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Scheme 72
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0100 Gauge Control Module Lost Communication With PCM Is DTC U0100 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Open wire check (F CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. PCM connector A (49P) Gauge control module 32P connector 4. Check for continuity between test points 1 and 2 respectively. Test condition IG LOCK (0) PCM connector A (49P): disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 Gauge control module 32P connector No. 19 (WHT) Test point 2 PCM connector A (49P) No. 3 (WHT) Test circuit F CAN-L Test point 1 Gauge control module 32P connector No. 20 (RED) Test point 2 PCM connector A (49P) No. 4 (RED) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : An open or poor connection in the F CAN wires between the PCM and the gauge control module.

Scheme 73

Scheme 73: DTC U0100-00: F-CAN Malfunction (Lost Communication with Powertrain Control Module (PCM)); DTC U0101
Scheme 73: DTC U0100-00: F-CAN Malfunction (Lost Communication with Powertrain Control Module (PCM)); DTC U0101

Note. Before you troubleshoot, REVIEW THE HOW TO TROUBLESHOOT THE REAL TIME AWD SYSTEM .

DTC DescriptionDTCFreeze Frame
U0100-00 F-CAN Malfunction (Lost Communication with Powertrain Control Module (PCM))
U0101-00 F-CAN Malfunction (Lost Communication with A/T Control System)
U0122-00 F-CAN Malfunction (Lost Communication with VSA Modulator-Control Unit)
U0126-00 F-CAN Malfunction (Lost Communication with Steering Angle Sensor)

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  1. Problem verification (DTC check): 1. Turn the ignition switch to ON (II). 2. Clear the DTC with the HDS. 3. Turn the ignition switch to LOCK (0). 4. Start the engine. 5. Check for DTCs with the HDS. DTC Description DTC Freeze Frame U0100-00 F-CAN Malfunction (Lost Communication with Powertrain Control Module (PCM)) U0101-00 F-CAN Malfunction (Lost Communication with A/T Control System) U0122-00 F-CAN Malfunction (Lost Communication with VSA Modulator- Control Unit) U0126-00 F-CAN Malfunction (Lost Communication with Steering Angle Sensor) Is DTC U0100-00, U0101-00, U0122-00, or U0126-00 indicated? DTC U0100-00 or U0101-00 is indicated : Go to step 2. DTC U0122-00 is indicated : Go to step 3 . DTC U0126-00 is indicated : Go to step 4 . DTC is not indicated : Intermittent failure, the system is OK at this time.
  2. Open wire check (F CAN-H, F CAN-L lines): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. Real time AWD control unit 24P connector PCM connector A (49P) 4. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Real time AWD control unit 24P connector: disconnected PCM connector A (49P): disconnected Test circuit F CAN-H Test point 1 Real time AWD control unit 24P connector No. 14 (WHT) Test point 2 PCM connector A (49P) No. 3 (WHT) Test circuit F CAN-L Test point 1 Real time AWD control unit 24P connector No. 24 (RED) Test point 2 PCM connector A (49P) No. 4 (RED) Is there continuity? YES : Update the PCM if it does not have the latest software See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) , or substitute a known-good PCM See «PCM UPDATE»(ref-595375-S42937672232014013100000) or «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) , and recheck. If the symptom/indication goes away with the updated PCM, troubleshooting is complete. If the symptom/indication goes away with a known-good PCM, replace the original PCM See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) . NO : Repair an open in the F CAN-H and/or F CAN-L wires between the real time AWD control unit and the PCM.
  3. Open wire check (F CAN-H, F CAN-L lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Real time AWD control unit 24P connector VSA modulator-control unit 38P connector 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Real time AWD control unit 24P connector: disconnected VSA modulator-control unit 38P connector: disconnected Test circuit F CAN-H Test point 1 Real time AWD control unit 24P connector No. 14 (WHT) Test point 2 VSA modulator-control unit 38P connector No. 38 (WHT) Test circuit F CAN-L Test point 1 Real time AWD control unit 24P connector No. 24 (RED) Test point 2 VSA modulator-control unit 38P connector No. 26 (RED) Is there continuity? YES : Update the VSA modulator-control unit if it does not have the latest software See «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) , «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) or «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) , and recheck. If the symptom/indication goes away with the updated VSA modulator-control unit, troubleshooting is complete. If the symptom/indication goes away with the updated the VSA modulator-control unit, replace the original VSA modulator-control unit See «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) , «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) or «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) . NO : Repair an open in the F CAN-H and/or F CAN-L wires between the real time AWD control unit and the VSA modulator-control unit.
  4. Open wire check (F CAN-H, F CAN-L lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Real time AWD control unit 24P connector Steering angle sensor 4P connector 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Real time AWD control unit 24P connector: disconnected Steering angle sensor 4P connector: disconnected Test circuit F CAN-H Test point 1 Real time AWD control unit 24P connector No. 14 (WHT) Test point 2 Steering angle sensor 4P connector No. 2 (WHT) Test circuit F CAN-L Test point 1 Real time AWD control unit 24P connector No. 24 (RED) Test point 2 Steering angle sensor 4P connector No. 3 (RED) Is there continuity? YES : «REPLACE THE STEERING ANGLE SENSOR»(ref-595416-S21284073902014013100000) . NO : Repair an open in the F CAN-H and/or F CAN-L wires between the real time AWD control unit and the steering angle sensor.

Scheme 77

Scheme 77: DTC U0114: F-CAN Malfunction (PCM-AWD Control Unit)
Scheme 77: DTC U0114: F-CAN Malfunction (PCM-AWD Control Unit)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .

DTC DescriptionConfirmed DTCPending DTCFreeze Frame
U0114 F-CAN MALFUNCTION (AWD CONTROL UNIT-PCM)

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  1. DTC check: 1. Turn the ignition switch to ON (II). 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0029 F-CAN MALFUNCTION (BUS-OFF(PCM)) U0114 F-CAN MALFUNCTION (AWD CONTROL UNIT-PCM) Are DTC U0029 and U0114 indicated at the same time? YES : «DO THE TROUBLESHOOTING FOR DTC U0029»(ref-595410-S09808329262014013100000) . NO : Go to step 2.
  2. Problem verification: 1. Clear the DTC with the HDS See «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) or «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) . 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0114 F-CAN MALFUNCTION (AWD CONTROL UNIT-PCM) Is DTC U0114 indicated? YES : The failure is duplicated. Go to step 3. NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the real time AWD control unit and the PCM.
  3. Real time AWD system check: 1. Check for communication to the Real time AWD system with the HDS. Does the HDS communicate with the real time AWD control unit? YES : Go to step 4. NO : Go to the real time AWD symptom troubleshooting for HDS does not communicate.
  4. Open wire check (F CAN-H line): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. PCM connector A (49P) Real time AWD control unit 24P connector 4. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected Real time AWD control unit 24P connector: disconnected Test circuit F CAN-H Test point 1 PCM connector A (49P) No. 3 (WHT) Test point 2 Real time AWD control unit 24P connector No. 14 (WHT) Is there continuity? YES : The F CAN-H wire is OK. Go to step 5. NO : Repair an open in the F CAN-H wire between the PCM (A3) and the real time AWD control unit, then do the repair verification .
  5. Open wire check (F CAN-L line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected Real time AWD control unit 24P connector: disconnected Test circuit F CAN-L Test point 1 PCM connector A (49P) No. 4 (RED) Test point 2 Real time AWD control unit 24P connector No. 24 (RED) Is there continuity? YES : The F CAN-L wire is OK. Update the real time AWD control unit See «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) , «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) or «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) if it does not have the latest software, then do the repair verification . If DTC U0114 is indicated after updated, replace the original real time AWD control unit See «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) , «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) or «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) , then do the repair verification . NO : Repair an open in the F CAN-L wire between the PCM (A4) and the real time AWD control unit, then do the repair verification .
  1. Turn the ignition switch to LOCK (0).
  2. Reconnect all connectors.
  3. Turn the ignition switch to ON (II).
  4. Reset the PCM with the HDS See «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) or «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) .
  5. «DO THE PCM IDLE LEARN PROCEDURE»(ref-595375-S25100108042014013100000) .
  6. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0114 F-CAN MALFUNCTION (AWD CONTROL UNIT-PCM)

Is DTC U0114 indicated?

YES : Check for poor connections or loose terminals at the real time AWD control unit and the PCM then go to step 1 .

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

Scheme 80

Scheme 80: DTC U0114: Gauge Control Module Lost Communication With Real Time AWD Control Unit
Scheme 80: DTC U0114: Gauge Control Module Lost Communication With Real Time AWD Control Unit
DTC DescriptionDTC
U0114 Gauge Control Module Lost Communication With Real Time AWD Control Unit

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0114 Gauge Control Module Lost Communication With Real Time AWD Control Unit Is DTC U0114 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Fuse check: 1. Check the following fuse. Fuse No. B6 (7.5 A) Location Under-dash fuse/relay box Is the fuse OK? YES : Go to step 3. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. B6 (7.5 A) fuse circuit.
  3. Open wire check (IG1 P/W line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Real time AWD control unit 24P connector 3. Turn the ignition switch to ON (II). 4. Measure the voltage between test points 1 and 2. Test condition IG ON (II) Real time AWD control unit 24P connector: disconnected Test circuit IG1 P/W Test point 1 Real time AWD control unit 24P connector No. 12 (RED) Test point 2 Body ground Is there battery voltage? YES : The IG1 P/W wire is OK. Go to step 4. NO : Repair an open or high resistance in the wire.
  4. Open wire check (GND lines): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Real time AWD control unit 24P connector: disconnected Test circuit GND Test point 1 Real time AWD control unit 24P connector No. 4 (BLK) Test point 2 Body ground Test circuit GND Test point 1 Real time AWD control unit 24P connector No. 8 (BLK) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 5. NO : Repair an open or high resistance in the ground wire or poor ground (G603).
  5. Open wire check (F CAN lines): 1. Disconnect the following connector. Gauge control module 32P connector 2. Check for continuity between test points 1 and 2 respectively. Test condition IG LOCK (0) Real time AWD control unit 24P connector: disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 Real time AWD control unit 24P connector No. 14 (WHT) Test point 2 Gauge control module 32P connector No. 19 (WHT) Test circuit F CAN-L Test point 1 Real time AWD control unit 24P connector No. 24 (RED) Test point 2 Gauge control module 32P connector No. 20 (RED) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : An open or poor connection in the F CAN wires between the real time AWD control unit and the gauge control module.

Scheme 84

Scheme 84: DTC U0122: F-CAN Malfunction (PCM-VSA Modulator-Control Unit)
Scheme 84: DTC U0122: F-CAN Malfunction (PCM-VSA Modulator-Control Unit)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .

DTC DescriptionConfirmed DTCPending DTCFreeze Frame
U0122 F-CAN MALFUNCTION (PCM-VSA MODULATOR CONTROL UNIT)

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  1. DTC check: 1. Turn the ignition switch to ON (II). 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0029 F-CAN MALFUNCTION (BUS-OFF(PCM)) U0122 F-CAN MALFUNCTION (PCM-VSA MODULATOR CONTROL UNIT) Are DTC U0029 and U0122 indicated at the same time? YES : «DO THE TROUBLESHOOTING FOR DTC U0029»(ref-595410-S09808329262014013100000) . NO : Go to step 2.
  2. Problem verification: 1. Clear the DTC with the HDS See «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) or «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) . 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0122 F-CAN MALFUNCTION (PCM-VSA MODULATOR CONTROL UNIT) Is DTC U0122 indicated? YES : The failure is duplicated. Go to step 3. NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the VSA modulator-control unit and the PCM.
  3. VSA system check: 1. Check for communication to the VSA system with the HDS. Does the HDS communicate with the VSA modulator-control unit? YES : Go to step 4. NO : «GO TO THE SYMPTOM TROUBLESHOOTING FOR ABS INDICATOR, BRAKE SYSTEM INDICATOR, AND VSA INDICATOR DO NOT GO OFF»(ref-595379-S14534515962014013100000) .
  4. Open wire check (F CAN-H line): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. PCM connector A (49P) VSA modulator-control unit 38P connector 4. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected VSA modulator-control unit 38P connector: disconnected Test circuit F CAN-H Test point 1 PCM connector A (49P) No. 3 (WHT) Test point 2 VSA modulator-control unit 38P connector No. 38 (WHT) Is there continuity? YES : The F CAN-H wire is OK. Go to step 5. NO : Repair an open in the F CAN-H wire between the PCM (A3) and the VSA modulator-control unit, then do the repair verification .
  5. Open wire check (F CAN-L line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected VSA modulator-control unit 38P connector: disconnected Test circuit F CAN-L Test point 1 PCM connector A (49P) No. 4 (RED) Test point 2 VSA modulator-control unit 38P connector No. 26 (RED) Is there continuity? YES : The F CAN-L wire is OK. Update the VSA modulator-control unit See «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) , «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) or «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) if it does not have the latest software, then do the repair verification . If DTC U0122 is indicated after updated, replace the VSA modulator-control unit See «VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595411-S13354206342014013100000) , «VSA MODULATOR-CONTROL UNIT UPDATE»(ref-595411-S33795849562014013100000) or «VSA SENSOR NEUTRAL POSITION MEMORIZATION»(ref-595411-S26728862432014013100000) , then do the repair verification . NO : Repair an open in the F CAN-L wire between the PCM (A4) and the VSA modulator-control unit, then do the repair verification .
  1. Turn the ignition switch to LOCK (0).
  2. Reconnect all connectors.
  3. Turn the ignition switch to ON (II).
  4. Reset the PCM with the HDS See «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) or «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) .
  5. «DO THE PCM IDLE LEARN PROCEDURE»(ref-595375-S25100108042014013100000) .
  6. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0122 F-CAN MALFUNCTION (PCM-VSA MODULATOR CONTROL UNIT)

Is DTC U0122 indicated?

YES : Check for poor connections or loose terminals at the VSA modulator-control unit and the PCM then go to step 1 .

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

Scheme 87

Scheme 87: DTC U0122: Gauge Control Module Lost Communication With VSA Modulator-Control Unit (VSA Message)
Scheme 87: DTC U0122: Gauge Control Module Lost Communication With VSA Modulator-Control Unit (VSA Message)
DTC DescriptionDTC
U0122 Gauge Control Module Lost Communication With VSA Modulator- Control Unit (VSA Message)

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0122 Gauge Control Module Lost Communication With VSA Modulator- Control Unit (VSA Message) Is DTC U0122 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Fuse check: 1. Check the following fuses. Fuse No. A1-4 (20 A) Location Under-hood fuse/relay box Fuse No. B24 (7.5 A) Location Under-dash fuse/relay box Is each fuse OK? YES : Go to step 3. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. A1-4 (20 A) and/or No. B24 (7.5 A) fuse circuit(s).
  3. Open wire check (+B ABS/VSA FSR line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. VSA modulator-control unit 38P connector 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) VSA modulator-control unit 38P connector: disconnected Test circuit +B ABS/VSA FSR Test point 1 VSA modulator control unit 38P connector No. 4 (WHT) Test point 2 Body ground Is there battery voltage? YES : The +B ABS/VSA FSR wire is OK. Go to step 4. NO : Repair an open or high resistance in the wire.
  4. Open wire check (IG1 VSA/ABS line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) VSA modulator-control unit 38P connector: disconnected Test circuit IG1 VSA/ABS Test point 1 VSA modulator-control unit 38P connector No. 36 (PUR) Test point 2 Body ground Is there battery voltage? YES : The IG1 VSA/ABS wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (GND lines): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) VSA modulator-control unit 38P connector: disconnected Test circuit GND Test point 1 VSA modulator control unit 38P connector No. 1 (BLK) Test point 2 Body ground Test circuit GND Test point 1 VSA modulator control unit 38P connector No. 3 (BLK) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 6. NO : Repair an open or high resistance in the ground wire or poor ground (G201).
  6. Open wire check (F CAN lines): 1. Disconnect the following connector. Gauge control module 32P connector 2. Check for continuity between test points 1 and 2 respectively. Test condition IG LOCK (0) VSA modulator-control unit 38P connector: disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 Gauge control module 32P connector No. 19 (WHT) Test point 2 VSA modulator-control unit 38P connector No. 38 (WHT) Test circuit F CAN-L Test point 1 Gauge control module 32P connector No. 20 (RED) Test point 2 VSA modulator-control unit 38P connector No. 26 (RED) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) or «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) . NO : An open or poor connection in the F CAN wires between the VSA modulator-control unit and the gauge control module.

Scheme 92

Scheme 92: DTC U0127: Gauge Control Module Lost Communication With TPMS Control Unit (TPMS Message)
Scheme 92: DTC U0127: Gauge Control Module Lost Communication With TPMS Control Unit (TPMS Message)
DTC DescriptionDTC
U0127 Gauge Control Module Lost Communication With TPMS Control Unit (TPMS Message)

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0127 Gauge Control Module Lost Communication With TPMS Control Unit (TPMS Message) Is DTC U0127 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Fuse check: 1. Check the following fuses. Fuse No. B5 (10 A) No. B40 (7.5 A) Location Under-dash fuse/relay box Is each fuse OK? YES : Go to step 3. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. B5 (10 A) and/or No. B40 (7.5 A) fuse circuit(s).
  3. Open wire check (+B TPMS line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. TPMS control unit 20P connector 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) TPMS control unit 20P connector: disconnected Test circuit +B TPMS Test point 1 TPMS control unit 20P connector No. 1 (RED) Test point 2 Body ground Is there battery voltage? YES : The +B TPMS wire is OK. Go to step 4. NO : Repair an open or high resistance in the wire.
  4. Open wire check (IG1 METER line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) TPMS control unit 20P connector: disconnected Test circuit IG1 METER Test point 1 TPMS control unit 20P connector No. 3 (LT GRN) Test point 2 Body ground Is there battery voltage? YES : The IG1 METER wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (GND line): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) TPMS control unit 20P connector: disconnected Test circuit GND Test point 1 TPMS control unit 20P connector No. 8 (BLK) Test point 2 Body ground Is there continuity? YES : The GND wire is OK. Go to step 6. NO : Repair an open or high resistance in the ground wire or poor ground (G503).
  6. Open wire check (F CAN lines): 1. Disconnect the following connector. Gauge control module 32P connector 2. Check for continuity between test points 1 and 2 respectively. Test condition IG LOCK (0) TPMS control unit 20P connector: disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 TPMS control unit 20P connector No. 9 (WHT) Test point 2 Gauge control module 32P connector No. 19 (WHT) Test circuit F CAN-L Test point 1 TPMS control unit 20P connector No. 20 (RED) Test point 2 Gauge control module 32P connector No. 20 (RED) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : An open or poor connection in the F CAN wires between the TPMS control unit and the gauge control module.

Scheme 97

Scheme 97: DTC U0131: F-CAN Malfunction (PCM-EPS Control Unit)
Scheme 97: DTC U0131: F-CAN Malfunction (PCM-EPS Control Unit)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information See HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .

DTC DescriptionConfirmed DTCPending DTCFreeze Frame
U0131 F-CAN MALFUNCTION (PCM-EPS CONTROL UNIT)

Scheme 98

Scheme 98
Scheme 98

Scheme 99

Scheme 99
Scheme 99
  1. DTC check: 1. Turn the ignition switch to ON (II). 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0029 F-CAN MALFUNCTION (BUS-OFF(PCM)) U0131 F-CAN MALFUNCTION (PCM-EPS CONTROL UNIT) Are DTC U0029 and U0131 indicated at the same time? YES : Go to «THE TROUBLESHOOTING FOR DTC U0029»(ref-595410-S16072686532014013100000) . NO : Go to step 2.
  2. Problem verification: 1. Clear the DTC with the HDS See «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) or «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) . 2. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0131 F-CAN MALFUNCTION (PCM-EPS CONTROL UNIT) Is DTC U0131 indicated? YES : The failure is duplicated. Go to step 3. NO : Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EPS control unit and the PCM.
  3. EPS system check: 1. Check that the HDS communicates with the EPS system. Does the HDS communicate with the EPS control unit? YES : Go to step 4. NO : «GO TO THE SYMPTOM TROUBLESHOOTING FOR AN EPS INDICATOR DOES NOT GO OFF, AND NO DTCS ARE STORED»(ref-595418-S39485234522014013100000) .
  4. Open wire check (F CAN-H line): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. PCM connector A (49P) EPS control unit connect A (11P) 4. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected EPS control unit connect A (11P): disconnected Test circuit F CAN-H Test point 1 PCM connector A (49P) No. 3 (WHT) Test point 2 EPS control unit connector A (11P) No. 7 (WHT) Is there continuity? YES : The F CAN-H wire is OK. Go to step 5. NO : Repair an open in the F CAN-H wire between the PCM (A3) and the EPS control unit, then do the repair verification .
  5. Open wire check (F CAN-L line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected EPS control unit connect A (11P): disconnected Test circuit F CAN-L Test point 1 PCM connector A (49P) No. 4 (RED) Test point 2 EPS control unit connector A (11P) No. 9 (RED) Is there continuity? YES : The F CAN-L wire is OK. Update the EPS control unit See «EPS CONTROL UNIT UPDATE»(ref-595418-S01069515502014013100000) or «EPS CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595418-S31963372542014013100000) if it does not have the latest software, or substitute a known-good EPS control unit See «EPS CONTROL UNIT UPDATE»(ref-595418-S01069515502014013100000) or «EPS CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595418-S31963372542014013100000) , then do the repair verification . If DTC U0131 is not indicated after substitution, replace the original EPS control unit See «EPS CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595418-S31963372542014013100000) or «EPS CONTROL UNIT UPDATE»(ref-595418-S01069515502014013100000) , then do the repair verification . NO : Repair an open in the F CAN-L wire between the PCM (A4) and the EPS control unit, then do the repair verification .
  1. Reconnect all connectors.
  2. Turn the ignition switch to ON (II).
  3. Reset the PCM with the HDS See «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) or «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) .
  4. «DO THE PCM IDLE LEARN PROCEDURE»(ref-595375-S25100108042014013100000) .
  5. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0131 F-CAN MALFUNCTION (PCM-EPS CONTROL UNIT)

Is DTC U0131 indicated?

YES : Check for poor connections or loose terminals at the EPS control unit and the PCM, then go to step 1 .

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

Scheme 100

Scheme 100: DTC U0131: Gauge Control Module Lost Communication With EPS Control Unit
Scheme 100: DTC U0131: Gauge Control Module Lost Communication With EPS Control Unit
DTC DescriptionDTC
U0131 Gauge Control Module Lost Communication With EPS Control Unit

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

Scheme 101

Scheme 101
Scheme 101

Scheme 102

Scheme 102
Scheme 102

Scheme 103

Scheme 103
Scheme 103
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0131 Gauge Control Module Lost Communication With EPS Control Unit Is DTC U0131 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Fuse check: 1. Check the following fuses. Fuse No. A1-1 (70 A) Location Under-hood fuse/relay box Fuse No. B24 (7.5 A) Location Under-dash fuse/relay box Is each fuse OK? YES : Go to step 3. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. A1-1 (70 A) and/or No. B24 (7.5 A) fuse circuit(s).
  3. Open wire check (+B EPS line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. EPS control unit connector A (11P) 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) EPS control unit connector A (11P): disconnected Test circuit +B EPS Test point 1 EPS control unit connector A (11P) No. 2 (WHT) Test point 2 Body ground Is there battery voltage? YES : The +B EPS wire is OK. Go to step 4. NO : Repair an open or high resistance in the wire.
  4. Open wire check (IG1 VSA/ABS line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) EPS control unit connector A (11P): disconnected Test circuit IG1 VSA/ABS Test point 1 EPS control unit connector A (11P) No. 11 (PUR) Test point 2 Body ground Is there battery voltage? YES : The IG1 VSA/ABS wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (F CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Gauge control module 32P connector 3. Check for continuity between test points 1 and 2 respectively. Test condition IG LOCK (0) EPS control unit connector A (11P): disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 Gauge control module 32P connector No. 19 (WHT) Test point 2 EPS control unit connector A (11P) No. 7 (WHT) Test circuit F CAN-L Test point 1 Gauge control module 32P connector No. 20 (RED) Test point 2 EPS control unit connector A (11P) No. 9 (RED) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : An open or poor connection in the F CAN wires between the EPS control unit and the gauge control module.

Scheme 104

Scheme 104: DTC U0151: Gauge Control Module Lost Communication With SRS Unit (SRS Message)
Scheme 104: DTC U0151: Gauge Control Module Lost Communication With SRS Unit (SRS Message)
DTC DescriptionDTC
U0151 Gauge Control Module Lost Communication With SRS Unit (SRS Message)

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

*: Wire colors may be substituted for SRS circuits.

Scheme 105

Scheme 105
Scheme 105
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U0151 Gauge Control Module Lost Communication With SRS Unit (SRS Message) Is DTC U0151 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Open wire check (F CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Gauge control module 32P connector SRS unit connector A (39P) 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected SRS unit connector A (39P): disconnected Test circuit F CAN-H Test point 1 Gauge control module 32P connector No. 19 (WHT) Test point 2 SRS unit connector A (39P) No. 20 (WHT*) Test circuit F CAN-L Test point 1 Gauge control module 32P connector No. 20 (RED) Test point 2 SRS unit connector A (39P) No. 21 (RED*) Is there continuity? YES : The F CAN wires are OK. Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : An open or poor connection in the F CAN wires between the SRS unit and the gauge control module.

Scheme 106

Scheme 106: DTC U0155: F-CAN Malfunction (PCM-Gauge Control Module)
Scheme 106: DTC U0155: F-CAN Malfunction (PCM-Gauge Control Module)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information See HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .

DTC DescriptionConfirmed DTCPending DTCFreeze Frame
U0155 F-CAN MALFUNCTION (PCM-GAUGE CONTROL MODULE)

Scheme 107

Scheme 107
Scheme 107

Scheme 108

Scheme 108
Scheme 108
  1. Problem verification: 1. Turn the ignition switch to ON (II). 2. Clear the DTC with the HDS See «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) or «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) . 3. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0155 F-CAN MALFUNCTION (PCM-GAUGE CONTROL MODULE) Is DTC U0155 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 gauge control module and the PCM.
  2. Gauge control module DTC check: 1. Check for gauge control module DTCs with the HDS. GAUGE CONTROL MODULE DTC Description DTC Freeze Frame U0029 F-CAN communication line error U0100 Gauge control module lost communication with ENG/AT Is DTC U0029 and/or U0100 indicated? YES : Go to step 3. NO : «DO THE GAUGE CONTROL MODULE INPUT TEST»(ref-595382-S32465124192014013100000) .
  3. Open wire check (F CAN-H line): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connectors. PCM connector A (49P) Gauge control module 32P connector 4. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-H Test point 1 PCM connector A (49P) No. 3 (WHT) Test point 2 Gauge control module 32P connector No. 19 (WHT) Is there continuity? YES : The F CAN-H wire is OK. Go to step 4. NO : Repair an open in the F CAN-H wire between the PCM (A3) and the gauge control module, then do the repair verification .
  4. Open wire check (F CAN-L line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) PCM connector A (49P): disconnected Gauge control module 32P connector: disconnected Test circuit F CAN-L Test point 1 PCM connector A (49P) No. 4 (RED) Test point 2 Gauge control module 32P connector No. 20 (RED) Is there continuity? YES : The F CAN-L wire is OK. Substitute a known-good gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) , then do the repair verification . If DTC U0155 is not indicated after substitution, replace the original gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) , then do the repair verification . NO : Repair an open in the F CAN-L wire between the PCM (A4) and the gauge control module, then do the repair verification .
  1. Turn the ignition switch to LOCK (0).
  2. Reconnect all connectors.
  3. Turn the ignition switch to ON (II).
  4. Reset the PCM with the HDS See «HOW TO TROUBLESHOOT THE A/T SYSTEM»(ref-595372-S19132079362014013100000) or «HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS»(ref-595375-S37864539652014013100000) .
  5. «DO THE PCM IDLE LEARN PROCEDURE»(ref-595375-S25100108042014013100000) .
  6. Check for Pending or Confirmed DTCs with the HDS. DTC Description Confirmed DTC Pending DTC Freeze Frame U0155 F-CAN MALFUNCTION (PCM-GAUGE CONTROL MODULE)

Is DTC U0155 indicated?

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

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

Scheme 109

Scheme 109: DTC U1280 or DTC indicator 80: Communication Bus Line Error (BUS-OFF)
Scheme 109: DTC U1280 or DTC indicator 80: Communication Bus Line Error (BUS-OFF)
DTC DescriptionDTC
U1280 Communication bus line error (BUS-OFF)
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0), and then back to ON (II). 3. Do the Self-Diagnostic Function with the HDS or the climate control unit See «HOW TO TROUBLESHOOT THE BODY ELECTRICAL»(ref-595406-S20099846262014013100000) or «HOW TO TROUBLESHOOT THE CLIMATE CONTROL SYSTEM»(ref-595407-S13718127242014013100000) . 4. Wait for at least 6 seconds. 5. Check for DTCs. DTC Description DTC U1280 Communication bus line error (BUS-OFF) Is DTC U1280 or 80 indicated? YES : «GO TO THE MICU U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 110

Scheme 110: DTC U1280: Automatic Lighting/Sunlight Sensor Communication Bus Line Error (BUS-OFF)
Scheme 110: DTC U1280: Automatic Lighting/Sunlight Sensor Communication Bus Line Error (BUS-OFF)
DTC DescriptionDTC
U1280 Automatic Lighting/Sunlight Sensor Communication Bus Line Error (BUS-OFF)
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1280 Automatic Lighting/Sunlight Sensor Communication Bus Line Error (BUS-OFF) Is DTC U1280 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.

Scheme 111

Scheme 111: DTC U1280: Gauge Control Module Communication Bus Line Error (BUS-OFF)
Scheme 111: DTC U1280: Gauge Control Module Communication Bus Line Error (BUS-OFF)
DTC DescriptionDTC
U1280 Gauge Control Module Communication Bus Line Error (BUS-OFF)

Note. If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1280 Gauge Control Module Communication Bus Line Error (BUS-OFF) Is DTC U1280 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 112

Scheme 112: DTC U1280: Immobilizer-Keyless Control Unit Communication Bus Line Error (BUS-OFF)
Scheme 112: DTC U1280: Immobilizer-Keyless Control Unit Communication Bus Line Error (BUS-OFF)
DTC DescriptionDTC
U1280 Immobilizer-Keyless Control Unit Communication Bus Line Error (BUS-OFF)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1280 Immobilizer-Keyless Control Unit Communication Bus Line Error (BUS-OFF) Is DTC U1280 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.

Scheme 113

Scheme 113: DTC U1280: Communication Bus Line Error (BUS-OFF)
Scheme 113: DTC U1280: Communication Bus Line Error (BUS-OFF)
DTC DescriptionDTC
U1280 Communication Bus Line Error (BUS-OFF)

Note. Refer to the Electrical Wiring Diagrams for the location of the under-dash fuse/relay box connectors. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

Scheme 114

Scheme 114
Scheme 114

Scheme 115

Scheme 115
Scheme 115
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1280 Communication Bus Line Error (BUS-OFF) Is DTC U1280 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. B CAN related units check: 1. Turn the ignition switch to LOCK (0). 2. Disconnect the appropriate connector at each control unit in the table one at a time. Clear the DTC, then recheck for DTCs after each unit is disconnected. Control Unit Connector Gauge control module 32P connector Immobilizer-keyless control unit 7P connector Automatic lighting/sunlight sensor 7P connector Climate control unit 32P connector DTC Description DTC U1280 Communication Bus Line Error (BUS-OFF) Is DTC U1280 indicated with each individual unit disconnected? YES : Leave the connectors disconnected, and go to step 3. NO : Replace the control unit that was disconnected when DTC U1280 did not reset.
  3. Shorted wire check (B CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Under-dash fuse/relay box connector K (12P) 3. Check for continuity between test points 1 and 2 individually. Test condition IG LOCK (0) Under-dash fuse/relay box connector K (12P): disconnected Test circuit B CAN-L Test point 1 Under-dash fuse/relay box connector K (12P) No. 1 (BLU) Test point 2 Body ground Test circuit B CAN-H Test point 1 Under-dash fuse/relay box connector K (12P) No. 2 (PNK) Test point 2 Body ground Is there continuity? YES : Repair a short to ground in the B CAN wires. NO : The B CAN wires are OK. Go to step 4.
  4. Shorted wire check (B CAN-L to B CAN-H line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Under-dash fuse/relay box connector K (12P): disconnected Test circuit B CAN-L, B CAN-H Test point 1 Under-dash fuse/relay box connector K (12P) No. 1 (BLU) Test point 2 Under-dash fuse/relay box connector K (12P) No. 2 (PNK) Is there continuity? YES : Repair a short in the B CAN-L to B CAN-H wire. NO : The B CAN-L to B CAN-H wire is OK. Faulty MICU; «REPLACE THE UNDER-DASH FUSE/RELAY BOX»(ref-595370-S18714513632014013100000) .

Scheme 116

Scheme 116: DTC U1281: Automatic Lighting/Sunlight Sensor Lost Communication With MICU
Scheme 116: DTC U1281: Automatic Lighting/Sunlight Sensor Lost Communication With MICU
DTC DescriptionDTC
U1281 Automatic Lighting/Sunlight Sensor Lost Communication With MICU
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1281 Automatic Lighting/Sunlight Sensor Lost Communication With MICU Is DTC U1281 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.

Scheme 117

Scheme 117: DTC U1281: Gauge Control Module Lost Communication With MICU (MICU Frame)
Scheme 117: DTC U1281: Gauge Control Module Lost Communication With MICU (MICU Frame)
DTC DescriptionDTC
U1281 Gauge Control Module Lost Communication With MICU (MICU Frame)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1281 Gauge Control Module Lost Communication With MICU (MICU Frame) Is DTC U1281 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 118

Scheme 118: DTC U1281: Immobilizer-Keyless Control Unit Lost Communication With MICU (MICU Frame)
Scheme 118: DTC U1281: Immobilizer-Keyless Control Unit Lost Communication With MICU (MICU Frame)
DTC DescriptionDTC
U1281 Immobilizer-Keyless Control Unit Lost Communication With MICU (MICU Frame)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U1281 Immobilizer-Keyless Control Unit Lost Communication With MICU (MICU Frame) Is DTC U1281 indicated? YES : «GO TO MICU DTC U1280 TROUBLESHOOTING»(ref-595410-S28875284982014013100000) . NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.

Scheme 119

Scheme 119: DTC U128D: Lost Communication with Gauge Control Module (Climate Control Unit); DTC Indicator 81: Cl
Scheme 119: DTC U128D: Lost Communication with Gauge Control Module (Climate Control Unit); DTC Indicator 81: Cl
DTC DescriptionDTC
U128D Lost communication with gauge control module (climate control unit)

Scheme 120

Scheme 120
Scheme 120

Scheme 121

Scheme 121
Scheme 121

Scheme 122

Scheme 122
Scheme 122

Scheme 123

Scheme 123
Scheme 123

Scheme 124

Scheme 124
Scheme 124
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Do the Self-Diagnostic Function with the HDS or the climate control unit See «HOW TO TROUBLESHOOT THE BODY ELECTRICAL»(ref-595406-S20099846262014013100000) or «HOW TO TROUBLESHOOT THE CLIMATE CONTROL SYSTEM»(ref-595407-S13718127242014013100000) . 4. Check for DTCs. DTC Description DTC U128D Lost communication with gauge control module (climate control unit) Is DTC U128D and 81 and 83 indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Determine possible failure area (gauge control module power and ground, B-CAN lines): 1. Select B-CAN Control Units Information from the Body Electrical System Select menu, and then select Check Connected Control Units. 2. Check the DETECT/NOT AVAILABLE information of the GAUGE CONTROL MODULE. Is DETECT indicated? YES : Go to step 3. NO : Go to step 4 .
  3. Open wire check (B CAN-H, B CAN-L lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Gauge control module 32P connector Climate control unit 32P connector 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Climate control unit 32P connector: disconnected Test circuit B CAN-H Test point 1 Gauge control module 32P connector No. 30 (PNK) Test point 2 Climate control unit 32P connector No. 16 (PNK) Is there continuity? YES : Repair an open or poor connection in the B CAN-L wire between the climate control unit and the gauge control module. NO : Repair an open or poor connection in the B CAN-H wire between the climate control unit and the gauge control module.
  4. Fuse check: 1. Turn the ignition switch to LOCK (0). 2. Check the following fuses. Fuse No. A29 (10 A) Location Under-hood fuse/relay box Fuse No. B5 (10 A) Location Under-dash fuse/relay box Are the fuses OK? YES : Go to step 5. NO : Replace the fuse(s), and recheck. If the fuse(s) blow again, repair a short to ground in the No. A29 (10 A) fuse and/or the No. B5 (10 A) fuse circuit(s).
  5. Open wire check (IG1 METER line): 1. Disconnect the following connector. Gauge control module 32P connector 2. Turn the ignition switch to ON (II). 3. Measure the voltage between test points 1 and 2. Test condition IG ON (II) Gauge control module 32P connector: disconnected Test circuit IG1 METER Test point 1 Gauge control module 32P connector No. 17 (LT GRN) Test point 2 Body ground Is there battery voltage? YES : The IG1 METER wire is OK. Go to step 6. NO : Repair an open in the IG1 METER wire.
  6. Open wire check (+B BACK UP line): 1. Turn the ignition switch to LOCK (0). 2. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit +B BACK UP Test point 1 Gauge control module 32P connector No. 1 (RED) Test point 2 Body ground Is there battery voltage? YES : The +B BACK UP wire is OK. Go to step 7. NO : Repair an open in the wire between the No. A29 (10 A) fuse in the under-hood fuse/relay box and gauge control module.
  7. Open wire check (GND lines): 1. Check for continuity between test points 1 and 2 individually. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit GND Test point 1 Gauge control module 32P connector No. 4 (BRN) Test point 2 Body ground Test circuit GND Test point 1 Gauge control module 32P connector No. 32 (BRN) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 8. NO : Check for an open in the wire(s) between the gauge control module and body ground. If the wires are OK, check poor ground at G502.
  8. Open wire check (B CAN-H, B CAN-L lines): 1. Disconnect the following connector. Climate control unit 32P connector 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Climate control unit 32P connector: disconnected Test circuit B CAN-H Test point 1 Gauge control module 32P connector No. 30 (PNK) Test point 2 Climate control unit 32P connector No. 16 (PNK) Is there continuity? YES : Repair an open or poor connection in the B CAN-L wire between the climate control unit and the gauge control module. NO : Repair an open or poor connection in the B CAN-H wire between the climate control unit and the gauge control module.

Scheme 125

Scheme 125: DTC U128D: Automatic Lighting/Sunlight Sensor Lost Communication With Gauge Control Module
Scheme 125: DTC U128D: Automatic Lighting/Sunlight Sensor Lost Communication With Gauge Control Module
DTC DescriptionDTC
U128D Automatic Lighting/Sunlight Sensor Lost Communication With Gauge Control Module

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U128D Automatic Lighting/Sunlight Sensor Lost Communication With Gauge Control Module Is DTC U128D indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Determine possible failure area (gauge control module power and ground, B CAN line): 1. Select B-CAN CONTROL UNITS INFORMATION from the BODY ELECTRICAL SYSTEM SELECT menu, and then select CHECK CONNECTED CONTROL UNITS. 2. Check the DETECT/NOT AVAILABLE information of the GAUGE CONTROL MODULE. Is DETECT indicated? YES : Go to step 8 . NO : Go to step 3.
  3. Fuse check: 1. Check the following fuse. Fuse No. A29 (10 A) Location Under-hood fuse/relay box Is the fuse OK? YES : Go to step 4. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. A29 (10A) fuse circuit.
  4. Open wire check (+B BACK UP line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Gauge control module 32P connector 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit +B BACK UP Test point 1 Gauge control module 32P connector No. 1 (RED) Test point 2 Body ground Is there battery voltage? YES : The +B BACK UP wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (IG1 METER line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) Gauge control module 32P connector: disconnected Test circuit IG1 METER Test point 1 Gauge control module 32P connector No. 17 (LT GRN) Test point 2 Body ground Is there battery voltage? YES : The IG1 METER wire is OK. Go to step 6. NO : Repair an open or high resistance in the wire.
  6. Open wire check (GND lines): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2 individually. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit GND Test point 1 Gauge control module 32P connector No. 4 (BRN) Test point 2 Body ground Test circuit GND Test point 1 Gauge control module 32P connector No. 32 (BRN) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 7. NO : Repair an open or high resistance in the ground wire or poor ground (G502).
  7. Open wire check (B CAN lines): 1. Disconnect the following connector. Automatic lighting/sunlight sensor 7P connector 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Automatic lighting/sunlight sensor 7P connector: disconnected Test circuit B CAN-H Test point 1 Automatic lighting/sunlight sensor 7P connector No. 6 (PNK) Test point 2 Gauge control module 32P connector No. 30 (PNK) Is there continuity? YES : An open or poor connection in the B CAN-L wire between the automatic lighting/sunlight sensor and the gauge control module. NO : An open or poor connection in the B CAN-H wire between the automatic lighting/sunlight sensor and the gauge control module.
  8. Open wire check (B CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Gauge control module 32P connector Automatic lighting/sunlight sensor 7P connector 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Automatic lighting/sunlight sensor 7P connector: disconnected Test circuit B CAN-H Test point 1 Automatic lighting/sunlight sensor 7P connector No. 6 (PNK) Test point 2 Gauge control module 32P connector No. 30 (PNK) Is there continuity? YES : An open or poor connection in the B CAN-L wire between the automatic lighting/sunlight sensor and the gauge control module. NO : An open or poor connection in the B CAN-H wire between the automatic lighting/sunlight sensor and the gauge control module.

Scheme 131

Scheme 131: DTC U128D: Immobilizer-Keyless Control Unit Lost Communication With Gauge Control Module
Scheme 131: DTC U128D: Immobilizer-Keyless Control Unit Lost Communication With Gauge Control Module
DTC DescriptionDTC
U128D Immobilizer-Keyless Control Unit Lost Communication With Gauge Control Module

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U128D Immobilizer-Keyless Control Unit Lost Communication With Gauge Control Module Is DTC U128D indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Determine possible failure area (gauge control module power and ground, B CAN line): 1. Select B-CAN CONTROL UNITS INFORMATION from the BODY ELECTRICAL SYSTEM SELECT menu, and then select CHECK CONNECTED CONTROL UNITS. 2. Check the DETECT/NOT AVAILABLE information of the GAUGE CONTROL MODULE. Is DETECT indicated? YES : Go to step 8 . NO : Go to step 3.
  3. Fuse check: 1. Check the following fuses. Fuse No. A29 (10 A) Location Under-hood fuse/relay box Fuse No. B5 (10 A) Location Under-dash fuse/relay box Is each fuse OK? YES : Go to step 4. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. A29 (10 A) and/or No. B5 (10 A) fuse circuit(s).
  4. Open wire check (+B BACK UP line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Gauge control module 32P connector 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit +B BACK UP Test point 1 Gauge control module 32P connector No. 1 (RED) Test point 2 Body ground Is there battery voltage? YES : The +B BACK UP wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (IG1 METER line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) Gauge control module 32P connector: disconnected Test circuit IG1 METER Test point 1 Gauge control module 32P connector No. 17 (LT GRN) Test point 2 Body ground Is there battery voltage? YES : The IG1 METER wire is OK. Go to step 6. NO : Repair an open or high resistance in the wire.
  6. Open wire check (GND lines): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2 individually. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit GND Test point 1 Gauge control module 32P connector No. 4 (BRN) Test point 2 Body ground Test circuit GND Test point 1 Gauge control module 32P connector No. 32 (BRN) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 7. NO : Repair an open or high resistance in the ground wire or poor ground (G502).
  7. Open wire check (B CAN lines): 1. Disconnect the following connector. Immobilizer-keyless control unit 7P connector 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Immobilizer-keyless control unit 7P connector: disconnected Test circuit B CAN-H Test point 1 Immobilizer-keyless control unit 7P connector No. 4 (PNK) Test point 2 Gauge control module 32P connector No. 30 (PNK) Is there continuity? YES : An open or poor connection in the B CAN-L wire between the immobilizer-keyless control unit and the gauge control module. NO : An open or poor connection in the B CAN-H wire between the immobilizer-keyless control unit and the gauge control module.
  8. Open wire check (B CAN lines): 1. Disconnect the following connectors. Gauge control module 32P connector Immobilizer-keyless control unit 7P connector 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Immobilizer-keyless control unit 7P connector: disconnected Test circuit B CAN-H Test point 1 Immobilizer-keyless control unit 7P connector No. 4 (PNK) Test point 2 Gauge control module 32P connector No. 30 (PNK) Is there continuity? YES : An open or poor connection in the B CAN-L wire between the immobilizer-keyless control unit and the gauge control module. NO : An open or poor connection in the B CAN-H wire between the immobilizer-keyless control unit and the gauge control module.

Scheme 137

Scheme 137: DTC U128D: MICU Lost Communication With Gauge Control Module
Scheme 137: DTC U128D: MICU Lost Communication With Gauge Control Module
DTC DescriptionDTC
U128D MICU Lost Communication With Gauge Control Module

Note. Refer to the Electrical Wiring Diagrams for the location of the under-dash fuse/relay box connectors. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. DTC Description DTC U128D MICU Lost Communication With Gauge Control Module Is DTC U128D indicated? YES : Go to step 2. NO : Intermittent failure, the system is OK at this time. Check for loose or poor connections.
  2. Fuse check: 1. Check the following fuses. Fuse No. A29 (10 A) Location Under-hood fuse/relay box Fuse No. B5 (10 A) Location Under-dash fuse/relay box Is each fuse OK? YES : Go to step 3. NO : Replace the fuse. If the fuse blows again, repair a short to ground in the No. A29 (10 A) and/or No. B5 (10 A) fuse circuit(s).
  3. Open wire check (+B BACK UP line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Gauge control module 32P connector 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit +B BACK UP Test point 1 Gauge control module 32P connector No. 1 (RED) Test point 2 Body ground Is there battery voltage? YES : The +B BACK UP wire is OK. Go to step 4. NO : Repair an open or high resistance in the wire.
  4. Open wire check (IG1 METER line): 1. Turn the ignition switch to ON (II). 2. Measure the voltage between test points 1 and 2. Test condition IG ON (II) Gauge control module 32P connector: disconnected Test circuit IG1 METER Test point 1 Gauge control module 32P connector No. 17 (LT GRN) Test point 2 Body ground Is there battery voltage? YES : The IG1 METER wire is OK. Go to step 5. NO : Repair an open or high resistance in the wire.
  5. Open wire check (GND lines): 1. Turn the ignition switch to LOCK (0). 2. Check for continuity between test points 1 and 2 individually. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Test circuit GND Test point 1 Gauge control module 32P connector No. 4 (BRN) Test point 2 Body ground Test circuit GND Test point 1 Gauge control module 32P connector No. 32 (BRN) Test point 2 Body ground Is there continuity? YES : The GND wires are OK. Go to step 6. NO : Repair an open or high resistance in the ground wire or poor ground (G502).
  6. Open wire check (B CAN lines): 1. Disconnect the following connector. Under-dash fuse/relay box connector K (12P) 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module 32P connector: disconnected Under-dash fuse/relay box connector K (12P): disconnected Test circuit B CAN-H Test point 1 Under-dash fuse/relay box connector K (12P) No. 2 (PNK) Test point 2 Gauge control module 32P connector No. 30 (PNK) Is there continuity? YES : An open or poor connection in the B CAN-L wire between the MICU and the gauge control module. NO : An open or poor connection in the B CAN-H wire between the MICU and the gauge control module.

Scheme 142

Scheme 142: DTC U3000-49: Gauge Control Module Internal Circuit Error
Scheme 142: DTC U3000-49: Gauge Control Module Internal Circuit Error
DTC DescriptionDTC
U3000-49 Gauge Control Module Internal Circuit Error
  1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Check for DTCs with the HDS. DTC Description DTC U3000-49 Gauge Control Module Internal Circuit Error Is DTC U3000-49 indicated? YES : Replace the gauge control module See «Rewriting the ODO Data and Transferring the Maintenance Minder™ Data to a New Gauge Control Module»(ref-595382-S29459770492014013100000) or «GAUGE CONTROL MODULE REMOVAL AND INSTALLATION»(ref-595382-S39482976312014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 143

Scheme 143: DTC U3000-49: Control Module Internal Control Module Malfunction
Scheme 143: DTC U3000-49: Control Module Internal Control Module Malfunction

Note. Before you troubleshoot, REVIEW THE HOW TO TROUBLESHOOT THE REAL TIME AWD SYSTEM .

DTC DescriptionDTCFreeze Frame
U3000-49 Control Module Internal Control Module Malfunction
  1. Problem verification: 1. Turn the ignition switch to ON (II). 2. Clear the DTC with the HDS. 3. Start the engine. 4. Check for DTCs with the HDS. DTC Description DTC Freeze Frame U3000-49 Control Module Internal Control Module Malfunction Is DTC U3000-49 indicated? YES : Update the real time AWD control unit if it does not have the latest software See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) , or substitute a known-good real time AWD control unit See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) . NO : Intermittent failure, the system is OK at this time.

Scheme 144

Scheme 144: DTC U3000-51: Control Module Programming Error
Scheme 144: DTC U3000-51: Control Module Programming Error

Note. Before you troubleshoot, REVIEW THE HOW TO TROUBLESHOOT THE REAL TIME AWD SYSTEM .

DTC DescriptionDTCFreeze Frame
U3000-51 Control Module Programming Error
  1. Problem verification: 1. Do the re-programming of the real time AWD control unit See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) . 2. Check for DTCs with the HDS. DTC Description DTC Freeze Frame U3000-51 Control Module Programming Error Is DTC U3000-51 indicated? YES : Substitute a known-good real time AWD control unit See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) , and recheck. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit See «REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION»(ref-595445-S18680977012014013100000) or «REAL TIME AWD CONTROL UNIT UPDATE»(ref-595445-S13601915922014013100000) . NO : Intermittent failure, the system is OK at this time.

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