23. Measure the voltage between body ground and the appropriate TPMS control unit 20P connector terminal (see table).
Is there battery voltage?
YES -
Repair a short to power in the wire between the TPMS control unit and the appropriate initiator.?
NO -
Replace the TPMS control unit See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure Module/Service and
Repair.?
57-xx
SRS DTC Troubleshooting: 51-xx, 52-xx, 53-xx, 54-xx, 55-xx, 57-xx, 58-xx
DTC 51-xx, 52-xx, 53-xx, 54-xx, 55-xx, 57-xx, 58-xx ("x" can be 0 thru 9 or A thru F):
Internal Failure of the SRS Unit
NOTE:
- Before troubleshooting any of these DTCs, check the battery/system voltage and battery cable connections See: Starting and
Charging/Battery/Testing and Inspection/Component Tests and General Diagnostics/Battery Test. If the voltage is low, repair the charging
system, test and charge, or replace the battery before troubleshooting the SRS. If the battery/system voltage is now OK, ask the customer if
the battery ever went dead or if the engine was started and run with the battery in a low state of charge. A dead battery may trigger one or
more of these DTCs.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and
Disarming/Service and Repair and General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes.
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS
unit software See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/SRS Unit Update,
and retest.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to ON (II), then wait for 10 seconds.
3. Check for DTCs with the HDS.
Is DTC 51-xx, 52-xx, 53-xx, 54-xx, 55-xx, 57-xx, or 58-xx indicated?
YES -
Faulty SRS unit; replace the SRS unit See: Relays and Modules/Relays and Modules - Restraints and Safety Systems/Air Bag Control
Module/Service and Repair/SRS Unit Replacement.?
