VSA DTC 86-16 (Without CAN Gateway) (2016)
DTC 86-16 : F-CAN Communication With VTM-4 Control Unit / F-CAN Communication With SH-AWD Control Unit Malfunction
NOTE:
- Troubleshoot any PGM-FI DTCs first.
- Before you troubleshoot, review the general troubleshooting information - Refer to:
- According to the detected DTC(s), check the voltage supply and ground circuit of the control unit which cannot communicate with the VSA modulator-control unit.
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| 86-16 F-CAN Communication With VTM-4 Control Unit / F-CAN Communication With SH-AWD Control Unit Malfunction |
DTCs (VSA)
- 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, and let it idle for at least 5 seconds.
- 5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame 86-11 F-CAN Bus-Off Malfunction 86-16 F-CAN Communication With VTM-4 Control Unit / F-CAN Communication With SH-AWD Control Unit Malfunction Is DTC 86-16 indicated?
YES
If only DTC 86-16 is indicated, go to step 2.
YES
If DTC 86-11 is also indicated, go to DTC 86-11 - Refer to:
VSA DTC 86-11 (Without CAN Gateway) (2016) or
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting - Refer to:
How to Troubleshoot the VSA System (2014 2015 2016) .
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.
- Open wire check (F-CAN A_H, F-CAN A_L lines)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connectors.
VSA modulator-control unit 38P connector SH-AWD control unit 24P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode VSA modulator-control unit 38P connector: disconnected SH-AWD control unit 24P connector: disconnected Test circuit 1 Test point 1 VSA modulator-control unit 38P connector No. 38 - Refer to:
VSA Modulator-Control Unit Connector for Inputs and Outputs (2016) .Test point 2 SH-AWD control unit 24P connector No. 14 - Refer to:
SH-AWD ® Control Unit Connector for Inputs and Outputs (2016) .Test circuit 2 Test point 1 VSA modulator-control unit 38P connector No. 26 - Refer to:
VSA Modulator-Control Unit Connector for Inputs and Outputs (2016)Test point 2 SH-AWD control unit 24P connector No. 24 - Refer to:
SH-AWD ® Control Unit Connector for Inputs and Outputs (2016) .Is there continuity?
YES
The F-CAN A_H and F-CAN A_L wires are OK. Go to step 3.
NO
Repair an open in the wire between the VSA modulator-control unit and the SH-AWD control unit.
- SH-AWD control unit check (update or substitution)
- 1. Reconnect the following connectors.
VSA modulator-control unit 38P connector SH-AWD control unit 24P connector - 2. Update the SH-AWD control unit if it does not have the latest software,
or substitute a known-good SH-AWD control unit.
- 3. Clear the DTC with the HDS.
- 4. Turn the vehicle to the OFF (LOCK) mode.
- 5. Start the engine, and let it idle for at least 5 seconds.
- 6. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame 86-16 F-CAN Communication With VTM-4 Control Unit / F-CAN Communication With SH-AWD Control Unit Malfunction Is DTC 86-16 indicated?
YES
Go to step 4.
NO
If the SH-AWD control unit was updated, troubleshooting is complete. If the SH-AWD control unit was substituted, replace the original SH-AWD control unit - Refer to:
SH-AWD ® Control Unit Removal and Installation (2016 2017 2018 2019 2020)
- VSA modulator-control unit check (update)
- 1. Update the VSA modulator-control unit if it does not have the latest software.
- 2. Turn the vehicle to the OFF (LOCK) mode.
- 3. Start the engine, and let it idle for at least 5 seconds.
- 4. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame Is DTC 86-16 indicated?
YES
Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit .
NO
Troubleshooting is complete.