Turn the ignition switch OFF. Disconnect the ECM/PCM connector E (31P) connector. Check for continuity between the EPS control unit connector C (20P) terminal No. 19 and the ECM/PCM connector E (31P) terminal No. 26. ECM/PCM CONNECTOR E (31P) Is there continuity? YES - Go to step 16. NO - Repair open in the wire between the EPS control unit and ECM/PCM. Disconnect the gauge assembly 22P connector. Check for continuity between the EPS control unit connector C (20P) terminal No. 19 and body ground. EPS CONTROL UNIT CONNECTOR C (20P) Wire side of female terminals Is there continuity? YES - Repair short to body ground in the wire between the EPS control unit and the ECM/PCM. NO - Check for loose EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck.

DTC 37: EPS Control Unit Internal Circuit (Input Circuit For Motor Voltage) Clear the DTC. Start the engine. Turn the steering wheel from lock-to-lock several times, and wait 10 seconds or more. Does the EPS indicator come on? YES - Go to step 4. NO - The system is OK at this time. Stop the engine, and verify the DTC. Is DTC 37 indicated? YES - Check for loose EPS control unit connectors. If necessary, substitute a known-good EPS control unit and recheck. NO - Perform the appropriate troubleshooting for the code indicated.