Tire Pressure Warning Check Switch
TIRE PRESSURE WARNING CHECK SWITCHDescription
The following item can be checked by grounding the tire pressure warning check switch harness connector terminal.
^ The low tire pressure warning lamp in the combination meter blink according to the self-diagnostic results.
NOTE:
If low tire pressure warning lamp blinks below, the system is normal.
^ This mode shows transmitter status is in OFF-mode.
Perform transmitter wake up operation. Refer to WT-5, "TRANSMITTER WAKE UP OPERATION: Special Repair Requirement". Transmitter Wake Up Operation
Diagnosis Procedure
1.CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY
1. Turn ignition switch "ON".
2. Check voltage between tire pressure warning check switch connector M23 terminal 1 and ground.
Is the reference voltage outputted?
YES >> Repair or replace BCM circuit. Replace BCM.
NO >> GO TO 2.
2.CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect BCM harness connector
3. Check continuity between BCM harness connector M123 terminal 149 and tire pressure warning check switch connector M23 terminal 1.
4. Check harness for short to ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK BCM
Check BCM input/output signal. Refer to WT-45, "Reference Value". Reference Value
Is the inspection result normal?
YES >> INSPECTION END
NO >> Check BCM pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. Replace BCM.