B1202

DTC Troubleshooting: B1202 (EEPROM error)

DTC B1202 or EEPROM error is indicated:

Climate Control Unit Internal Error

NOTE:

- Check the battery condition Testing and Inspection and the charging system Alternator and Regulator Circuit Troubleshooting.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTC 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 with the HDS or the climate control unit.

5. Check for DTCs.

Is DTC B1202 or EEPROM error indicated?

YES -

The climate control unit is faulty, replace the climate control unit.�

NO -

Intermittent failure. The climate control unit is OK at this time. Check for poor connections at the climate control unit 40P connector.�