Manufacturer Code Charts: 45

TPMS DTC Troubleshooting: 45

DTC 45: Initiator Circuit Short Detection

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

4. Check for DTCs with the HDS.

Is DTC 45 indicated?
YES - Go to step 5.

NO - The system is OK at this time.


5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

6. Disconnect the TPMS control unit 20P connector.

7. Check for continuity between body ground and the appropriate TPMS control unit 20P connector terminal.





Is there continuity?
YES - Go to step 8.

NO - Go to step 10.






8. Disconnect the appropriate initiator 3P connector.

9. Check for continuity between body ground and the appropriate TPMS control unit 20P connector terminal.





Is there continuity?
YES - Repair short to body ground in the wire between the TPMS control unit and the appropriate initiator.

NO - Replace the appropriate initiator. Service and Repair






10. Check for continuity between the appropriate TPMS control unit 20P connector terminal.





Is there continuity?
YES - Go to step 11.

NO - Go to step 13.






11. Disconnect the appropriate initiator 3P connector.

12. Check for continuity between the appropriate TPMS control unit 20P connector terminal.





Is there continuity?
YES - Repair short in the wire between the TPMS control unit and the appropriate initiator.

NO - Replace the appropriate initiator. Service and Repair






13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

14. Measure the voltage between body ground and the appropriate TPMS control unit 20P connector terminal.





Is there battery voltage?
YES - Repair short to power in the wire between the TPMS control unit and the appropriate initiator.

NO - Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit Service and Repair and recheck.