Diagnosis Procedure
Regarding Wiring Diagram information, refer to PCS-24, "Wiring Diagram".
1. CHECK FUSE AND FUSIBLE LINKS
Check that the following IPDM E/R fuse or fusible links are not blown.

Is the fuse blown? YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2.
2. CHECK BATTERY POWER SUPPLY CIRCUIT

Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace harness or connectors.
3. CHECK GROUND CIRCUIT

Is the inspection result normal? YES >> Inspection End.
NO >> Repair or replace harness or connectors.
U1000 CAN COMM CIRCUIT
Parking brake switchBasic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow (With EXP-800 NI or GR8-1200 NI)
CHARGING SYSTEM DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
To test the charging system, use the following special service tools:
EXP-800 NI Battery and electrical diagnostic analyzer
GR8-1200 NI Multitasking ...
Front passenger air bag module
Exploded View
Front passenger air bag module
Steering member
Removal and Installation
WARNING:
Before servicing the SRS, turn ignition switch OFF, disconnect
both battery terminals then wait at
least three minutes.
Always work from the side of air bag module. Do ...
B142A ignition voltage
Description
DTC B142A IGNITION VOLTAGE
Ignition voltage is supplied to the air bag diagnosis sensor unit when the
ignition is in the ON position. The air
bag diagnosis sensor unit will monitor for low or high ignition voltage.
PART LOCATION
Refer to SRC-6, "Component Parts Location" ...