DTC 45
DTC 45: Initiator Circuit Short Detection1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF, then turn it ON (II)again.
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 OFF.
6. Disconnect TPMS control unit connectors A (14P) and B (20P).
7. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and body ground (see table).
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 the appropriate terminal in TPMS control unit connector A (14P) and body ground (see table).
Is there continuity?
YES - Repair the short to body ground in the appropriate wire between the TPMS control unit and the initiator.
NO - Replace the initiator.
10. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and connector B (20P) terminals (see table).
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 terminal in TPMS control unit connector A (14P) and connector B (20P) terminals (see table).
Is there continuity?
YES - Repair the short in the appropriate wire between the TPMS control unit and the initiator.
NO - Replace the initiator.
13. Turn the ignition switch ON (II).
14. Measure voltage between the appropriate terminal in TPMS control unit connector B (20P) and body ground individually.
Is there battery voltage?
YES - Repair the short to power in the appropriate wire between the TPMS control unit and the initiator.
NO - Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit and recheck.