Restraint Troubleshooting

B1355

B1488

DTC Description

The Passenger Airbag circuit consists of the SRSCM and the Passenger Airbag (PAB) which has two squib circuits. The SRSCM sets above DTC(s) if it detects short to battery line on the PAB circuit.

DTC Detecting Condition






Schematic Diagram






Terminal & Connector Inspection
Refer to the DESCRIPTION in this TROUBLESHOOTING part.

Inspection Procedure

1. PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING part.

2. CHECK SHORT TO BATTERY LINE
(1) Connect the battery negative cable to the battery.
(2) Turn the ignition switch to ON.
(3) Measure voltage between the terminal 2 of PAB harness connector and chassis ground. (PAB stage 1)
(4) Measure voltage between the terminal 4 of PAB harness connector and chassis ground. (PAB stage 2)

Specification (voltage) : Approximately 0 V






(5) Is the measured voltage within specification?
Yes
- Check the PAB Module.
No
- Repair the short to battery line circuit on wiring harness between the PAB and the SRSCM.

3. CHECK THE PAB MODULE
(1) Replace the Passenger Airbag(PAB) with a new one.
- Refer to "Passenger Airbag(PAB)" section in this SERVICE MANUAL.
(2) Install the DAB module and connect the DAB connector.
(3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
(4) Connect the SRSCM connector.
(5) Connect the battery negative cable to the battery.
(6) Connect a Hi-Scan(Pro) to the data link connector.
(7) Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC related to PAB?
Yes
- Go to next step.
No
- Replace PAB module.

4. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING part.