Honda HR-V Owners & Service Manuals

Honda HR-V: DTC C1873-00 (16-04): Steering Angle Sensor Malfunction (AWD)

Honda HR-V (2015-2021) Service Manual / Driveline & Axles / AWD System - Diagnostics / DTC C1873-00 (16-04): Steering Angle Sensor Malfunction (AWD)

NOTE: Before you troubleshoot, review the General Troubleshooting Information for the AWD with intelligent control system.

AWD System - Diagnostics

1. Problem verification:

  1. Turn the vehicle to the ON mode.
  2. Clear the DTC with the HDS.
  3. Start the engine.
  4. Check for DTCs with the HDS.

AWD System - Diagnostics

Is DTC C1873-00 indicated?

YES

The failure is duplicated. Go to step 2.

NO

Intermittent failure, the system is OK at this time. 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. VSA system DTC check:

Check for DTCs in the VSA system with the HDS.

AWD System - Diagnostics

Are any DTCs stored?

YES

Go to the indicated DTC's troubleshooting in the VSA system.

NO

Intermittent failure, the system is OK at this time. 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.

DTC U0100-00 (41-01), U0101-00 (41-04), U0122-00 (41-02), U0126-00 (41-06): F-CAN MALFUNCTION (LOST COMMUNICATION WITH POWERTRAIN CONTROL MODULE (PCM) ), (LOST COMMUNICATION WITH A/T CONTROL SYSTEM), (LOST COMMUNICATION WITH VSA MODULATOR-CONTROL UNIT), (LOST COMMUNICATION WITH STEERING ANGLE SENSOR) (AWD)

NOTE: Before you troubleshoot, review the General Troubleshooting Information for the AWD with intelligent control system.

AWD System - Diagnostics

DTC (AWD)

1. Problem verification (DTC check):

  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. Start the engine.
  5. Check for DTCs with the HDS.

AWD System - Diagnostics

Is DTC U0100-00, U0101-00, U0122-00, or U0126-00 indicated?

DTC U0100-00 or U0101-00 is indicated

The failure is duplicated. Go to step 2.

DTC U0122-00 is indicate

The failure is duplicated. Go to step 3.

DTC U0126-00 is indicated

The failure is duplicated. Go to step 4.

DTC is not indicated

Intermittent failure, the system is OK at this time. 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_H, F-CAN_L lines)1:

  1. Turn the vehicle to the OFF (LOCK) mode, and wait 2 minutes.
  2. Jump the SCS line with the HDS, and wait more than 1 minute.
  3. Disconnect the following connectors.

AWD control unit 24P connector

PCM connector A (51P)

  1. Check for continuity between test points 1 and 2.

AWD System - Diagnostics

AWD System - Diagnostics

Is there continuity?

YES

Update the PCM if it does not have the latest software, or substitute a known-good PCM, 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.

NO

Repair an open in the F-CAN_H and/or F-CAN_L wires between the AWD control unit and the PCM.

3. Open wire check (F-CAN_H, F-CAN_L lines)2:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Disconnect the following connectors.

AWD control unit 24P connector

VSA modulator-control unit 21P connector

  1. Check for continuity between test points 1 and 2.

AWD System - Diagnostics

Is there continuity?

YES

Update the VSA modulator-control unit if it does not have the latest software, and recheck. If the symptom/indication goes away with the updated VSA modulator-control unit, troubleshooting is complete. If the symptom/indication does not goes away with the updated the VSA modulator-control unit, replace the VSA modulator-control unit.

NO

Repair an open in the F-CAN_H and/or F-CAN_L wires between the AWD control unit and the VSA modulator-control unit.

4. Open wire check (F-CAN_H, F-CAN_L lines)3:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Disconnect the following connectors.

AWD control unit 24P connector

Steering angle sensor 4P connector

  1. Check for continuity between test points 1 and 2.

AWD System - Diagnostics

AWD System - Diagnostics

Is there continuity?

YES

Replace the steering angle sensor.

NO

Repair an open in the F-CAN_H and/or F-CAN_L wires between the AWD control unit and the steering angle sensor.

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