DTC U0047-00 (CAN Gateway)
DTC U0047-00 : CAN Gateway F-CAN ch B Bus Off
NOTE: Before you troubleshoot, review the general troubleshooting information .
| *1: With navigation |
| *2: Without navigation |
| DTC Description | DTC |
|---|---|
| U0047-00 CAN Gateway F-CAN ch B Bus Off |
DTC (CAN GATEWAY)
- 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.
-4. Turn the vehicle to the ON mode, and wait 6 seconds.
-5. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .
- Shorted unit check (PCM)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Jump the SCS line with the HDS, and wait more than 1 minute.
-3. Disconnect the following connector.
PCM connector A (50P) -4. Turn the vehicle to the ON mode.
-5. Clear the DTC with the HDS.
-6. Turn the vehicle to the OFF (LOCK) mode.
-7. Turn the vehicle to the ON mode, and wait 6 seconds.
-8. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES
Go to step 3.
NO
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .
- Shorted unit check (electric servo brake control unit)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Electric servo brake control unit 22P connector -3. Turn the vehicle to the ON mode.
-4. Clear the DTC with the HDS.
-5. Turn the vehicle to the OFF (LOCK) mode.
-6. Turn the vehicle to the ON mode, and wait 6 seconds.
-7. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES (with display audio)
Go to step 4.
YES (without display audio)
Go to step 5.
NO
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the original electric servo brake control unit .
- Shorted unit check (audio-navigation unit *1, audio unit *2
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Audio-navigation unit
*1, Audio unit
*2 connector E (16P)-3. Turn the vehicle to the ON mode.
-4. Clear the DTC with the HDS.
-5. Turn the vehicle to the OFF (LOCK) mode.
-6. Turn the vehicle to the ON mode, and wait 6 seconds.
-7. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES
Go to step 5.
NO
- Shorted unit check (ANC/active sound control unit)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
ANC/active sound control unit 20P connector -3. Turn the vehicle to the ON mode.
-4. Clear the DTC with the HDS.
-5. Turn the vehicle to the OFF (LOCK) mode.
-6. Turn the vehicle to the ON mode, and wait 6 seconds.
-7. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES
Go to step 6.
NO
- Shorted unit check (acoustic vehicle alerting control unit)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Acoustic vehicle alerting control unit 12P connector -3. Turn the vehicle to the ON mode.
-4. Clear the DTC with the HDS.
-5. Turn the vehicle to the OFF (LOCK) mode.
-6. Turn the vehicle to the ON mode, and wait 6 seconds.
-7. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
YES
Go to step 7.
NO
Substitute a known-good acoustic vehicle alerting control unit .
- Shorted unit check (VSA modulator-control unit)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
VSA modulator-control unit 46P connector -3. Turn the vehicle to the ON mode.
-4. Clear the DTC with the HDS.
-5. Turn the vehicle to the OFF (LOCK) mode.
-6. Turn the vehicle to the ON mode, and wait 6 seconds.
-7. Check for DTCs with the HDS.
DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off Is DTC U0047-00 indicated?
-
YES
- Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good body control module .
- If the original body control module is OK, go to step 8.
NO
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the VSA modulator-control unit .
-
- Shorted wire check (F-CAN B_H line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connectors.
Body control module connector B (36P) CAN gateway 16P connector -3. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Electric servo brake control unit 22P connector: disconnected Audio-navigation unit *1, Audio unit *2 connector E (16P) (with display audio): disconnected ANC/active sound control unit 20P connector: disconnected Acoustic vehicle alerting control unit 12P connector: disconnected VSA modulator-control unit 46P connector: disconnected Body control module connector B (36P): disconnected CAN gateway 16P connector: disconnected Test point 1 CAN gateway 16P connector (female terminals) No. 6: Test point 2 Body ground Is there 1 MΩ or more?
YES
Go to step 9.
NO
Repair a short in the F-CAN B_H wire between the CAN gateway and the connected units.
- Shorted wire check (F-CAN B_L line)
-1. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Electric servo brake control unit 22P connector: disconnected Audio-navigation unit *1, Audio unit *2 connector E (16P) (with display audio): disconnected ANC/active sound control unit 20P connector: disconnected Acoustic vehicle alerting control unit 12P connector: disconnected VSA modulator-control unit 46P connector: disconnected Body control module connector B (36P): disconnected CAN gateway 16P connector: disconnected Test point 1 CAN gateway 16P connector (female terminals) No. 14: Test point 2 Body ground Is there 1 MΩ or more?
YES
Go to step 10.
NO
Repair a short in the F-CAN B_L wire between the CAN gateway and the connected units.
- Shorted wire check (F-CAN B_H line to F-CAN B_L line)
-1. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Electric servo brake control unit 22P connector: disconnected Audio-navigation unit *1, Audio unit *2 connector E (16P) (with display audio): disconnected ANC/active sound control unit 20P connector: disconnected Acoustic vehicle alerting control unit 12P connector: disconnected VSA modulator-control unit 46P connector: disconnected Body control module connector B (36P): disconnected CAN gateway 16P connector: disconnected Test point 1 CAN gateway 16P connector (female terminals) No. 6: Test point 2 CAN gateway 16P connector (female terminals) No. 14: Is there 1 MΩ or more?
YES
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good CAN gateway .
NO
Repair a short in the F-CAN B_H wire to the F-CAN B_L wire between CAN gateway terminals No. 6 and No. 14.