DTC 1–4

DTC 1–4

WARNING: Whenever the ignition is switched ON (II), or has been turned OFF for less than 3 minutes, be careful not to bump the SRS unit; the airbags could accidentally deploy and cause damage or injury.

Test 1 – Check for short to earth in the driver’s airbag inflator:

1. Turn ignition OFF. Disconnect battery negative and then the positive terminal and wait 3 minutes.

2. Connect the short connector (RED) to the driver’s airbag connector.

A

Driver's airbag Assembly

B

Cable reel 3 – P connector

C

Short connector (RED)

D

SRS Short connector A – SMD 4090

E

SRS indicator light

F

Service check 2 – P connector

G

SCS short connector – SMD 4086

H

Data link connector (3 – P)

3. Connect SCS short connector A to the cable reel 3 – P connector.

CAUTION: Do not disconnect the passenger’s airbag connector.

4. Connect the SCS short connector to the service check connector.
5. Reconnect battery positive and negative terminals.
6. Turn ignition ON (II).
7. Record the most recent DTC, is DTC 1 – 4 or DTC 1 – 2 indicated?
   • If DTC 1 – 4 is indicated, go to Test 2.
   • If DTC 1 – 2 is indicated, short to earth in driver’s airbag inflator. Replace driver’s airbag assembly.

Test 2 – Check the SRS unit

Connect Test Harness B:

1. Turn ignition OFF and disconnect SCS short connector.
2. Disconnect battery negative and then the positive terminal and wait 3 minutes.

A

SRS main harness

B

Passenger's airbag 3 – P connector

C

Short connector (RED)

3. Remove the glovebox and connect the short connector (RED) to the passenger’s airbag 3 – P connector.
4. Disconnect SRS main harness 18 – P connector from SRS unit and connect Test Harness B between SRS unit and the 18 – P connector.
5. Connect jumper wires, as shown, to No. 13, 14, 15, and 16 terminals on rows A (SRS unit) and B (main harness) of Test Harness B. Ensure jumper wires are connected to the correct terminals.
6. Reconnect battery positive and negative terminals.