11-02

EPS DTC Troubleshooting: 11-02

DTC 11-02: Battery Voltage (Initial Diagnosis/Regular Diagnosis)

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Start the engine.

5. Wait at least 30 seconds.

6. Check for DTCs with the HDS.

Is the DTC 11-02 indicated?
YES - Go to step 7.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EPS control unit.


7. Turn the ignition switch to LOCK (0).

8. Disconnect EPS control unit connector A (11P).

9. Measure the voltage between EPS control unit connector A (11P) terminal No. 11 and body ground.
There should be battery voltage.

Is there battery voltage?
YES - Check for loose terminals in the EPS control unit connectors, and repair if necessary If no poor connections are found, replace the EPS control unit .. Service and Repair

NO - If there is no voltage, or the voltage is lower than battery voltage, repair an open or high resistance in the wire between the No 2 (70 A) fuse in the battery terminal fuse box and the EPS control unit. If the wire checks OK, check the battery,. Testing and Inspection and troubleshoot the alternator regulator circuit. Alternator and Regulator Circuit Troubleshooting