DTC 83-01; DTC 83-02: CAN Communication Failure & Timeout Error

NOTE:

Before you troubleshoot, review the general troubleshooting information .
Diagnose and repair any Powertrain DTCs first.

DTC Description	DTC	Freeze Frame
83-01 CAN Communication Failure
83-02 CAN Communication Timeout Error

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, then vehicle to the ON mode.

4. Wait 60 seconds or more.

5. Check for DTCs with the HDS.

DTC Description	DTC	Freeze Frame
83-01 CAN Communication Failure

DTC Description	DTC	Freeze Frame
83-02 CAN Communication Timeout Error

Is DTC 83-01 or 83-02 indicated?

YES

The failure is duplicated. Go to step 2.

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.

2. Disconnect the following connectors.

EPS control unit connector A (11P)

VSA modulator-control unit 38P connector

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (11P): disconnected
	VSA modulator-control unit 38P connector: disconnected
Test point 1	EPS control unit connector A (11P) No. 7
Test point 2	VSA modulator-control unit 38P connector No. 38

Test point 1	EPS control unit connector A (11P) No. 9
Test point 2	VSA modulator-control unit 38P connector No. 26

Is there continuity?

YES

The F-CAN_H and F-CAN_L wires are not open. Go to step 3.

Repair an open in the wire between the EPS control unit and the VSA modulator-control unit.

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

1. Reconnect the following connector.

VSA modulator-control unit 38P connector

2. Disconnect the following connector.

Steering angle sensor 4P connector

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (11P): disconnected
	Steering angle sensor 4P connector: disconnected
Test point 1	EPS control unit connector A (11P) No. 7
Test point 2	Steering angle sensor 4P connector No. 2

Test point 1	EPS control unit connector A (11P) No. 9
Test point 2	Steering angle sensor 4P connector No. 3

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The F-CAN_H and F-CAN_L wires are OK. Go to step 4.

Repair an open in the wire between the EPS control unit and the steering angle sensor.

4. EPS control unit check (update):

1. Reconnect the following connectors.

EPS control unit connector A (11P)

Steering angle sensor 4P connector

2. Update the EPS control unit if it does not have the latest software.

3. Clear the DTC with the HDS.

4. Turn the vehicle to the OFF (LOCK) mode, then vehicle to the ON mode.

5. Wait 60 seconds or more.

6. Check for DTCs with the HDS.

DTC Description	DTC	Freeze Frame
83-01 CAN Communication Failure
83-02 CAN Communication Timeout Error

Is DTC 83-01 or 83-02 indicated?

YES

Replace the EPS control unit .

Troubleshooting is complete.