Harness Inspection
- Inspect TDC sensor power supply circuit. Disconnect TDC sensor harness connector. Turn ignition on. Using DVOM, measure voltage between sensor harness connector terminal No. 3 (Red wire) on Sonata V6, No. 2 (Red wire) on all other models and vehicle ground. Voltage should be battery voltage.
- Check continuity of ground circuit. Turn ignition off. Using ohmmeter, check resistance between sensor harness connector terminal No. 2 (Black wire) on Sonata V6, No. 1 (Black wire) on all other models and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
- Check sensor output voltage from ECM. Turn ignition on. Using DVOM, measure voltage between TDC sensor harness connector terminal No. 4 (White wire) on Sonata V6, No. 3 (Yellow wire) on all other models and vehicle ground. Voltage should be 4.8-5.2 volts. If voltage is within specification, circuit is okay. If voltage is not within specification, turn ignition off.
- Disconnect ECM connector. Connect jumper wire between ECM harness connector terminal and vehicle ground. See TDC INPUT TERMINAL IDENTIFICATION for ECM terminal identification. Using ohmmeter, check resistance between TDC harness connector terminal No. 4 (White wire) on Sonata V6, No. 3 (Yellow wire) on all other models and vehicle ground. If continuity does not exist, inspect and repair circuit as needed. If continuity exists, substitute ECM with known good unit and retest. Top Dead Center Sensor Inspection
Manufacturer does not provide individual component testing.
TDC INPUT TERMINAL IDENTIFICATION
| Application |
ECM Terminal No. |
Connector No. |
Wire Color |
| Excel |
16 |
C50-5 |
Yellow |