DTC Troubleshooting: B2969
DTC B2969:
Climate Control Unit Lost Communication with Combination Switch Control Unit (WIPSW message)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in the B-CAN system diagnosis test mode A See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting
- B-CAN System Diagnosis Test Mode A.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Wait for 6 seconds or more.
4. Do the self-diagnostic function with the HDS.
5. Check for DTCs.
Is DTC B2969 indicated?
YES -
Go to step 6.
NO -
Intermittent failure, check for a loose wire or poor connection in the climate control unit connector A (40P).?
6. Check for DTCs with the HDS.
Are any of the following DTCs indicated; B1958, B1063, or B1156 indicated?
YES -
Do the wiper/washer switch (combination switch control unit) input test See: Wiper and Washer Systems/Testing and Inspection/Wiper/Washer
Switch (Combination Switch Control Unit) Input Test.?
NO -
Do the climate control unit troubleshooting See: Heating and Air Conditioning/Control Assembly/Testing and Inspection.?
B2970
DTC Troubleshooting: B2970
DTC B2970:
Climate Control Unit Lost Communication with Relay Control Module (RM message)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in the B-CAN system diagnosis test mode A See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting
- B-CAN System Diagnosis Test Mode A.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Wait for 6 seconds or more.
4. Do the self-diagnostic function with the HDS.
5. Check for DTCs.
Is DTC B2970 indicated?
