Failure Mode I

Failure Mode I: Short or Open In SRS Indicator Wire Harness

NOTE:
The radio may have a five-digit coded theft protection circuit. Be sure to get the customer's code number before disconnecting the battery cables.

Disconnection Of The Main Harness For Troubleshooting:

1. Disconnect the SRS main harness 4-P connector from the main wire harness.

SRS Main Harness Connector Pinout:

2. Turn the ignition switch ON and wait for six seconds. Measure the voltage between the No.1 terminal and body ground on the SRS main harness 4-P connector side, with the ignition switch ON.
- If voltage is more than 8.5 V, go to step 8.
- If voltage is less than 8.5 V, go to step 3.

3. Before disconnecting any part of the SRS wire harness, install the short connector(s).

Installation Of Test Harness B:

4. Connect Test Harness B (O7MAZ SPOO5OO) between the SRS unit and the SRS main harness 18-P connector.
5. Reconnect the battery positive cable and negative cable.

Test Harness B Connector Pinout:

6. Check for continuity between the B11 terminal and body ground.
- If there is continuity, the SRS main harness is shorted. Replace the SRS main wire harness and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Refer to Failure Mode Diagnostic Chart.
- If there is no continuity, go to step 7.

Test Harness B, SRS Main Harness Connector Pinouts:

7. Check for continuity between the B11 terminal of Test Harness B (07MAZ SPOO5OO) and the No.1 terminal of the SRS main harness 4-P connector.
- If there is continuity, the SRS unit is faulty. Replace it and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Refer to Failure Mode Diagnostic Chart.
- If there is no continuity, there is an open in the SRS main harness. Replace the SRS main harness and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Refer to Failure Mode Diagnostic Chart.

Dashboard Wire Harness 18-Pin Connector:

8. Reconnect the SRS main harness 4-P connector to the main wire harness. Disconnect the dashboard wire harness 18-P connector from the gauge assembly.

Dashboard Wire Harness 18-Pin Connector Pinout:

9. Turn the ignition switch ON and wait for six seconds. Measure the voltage between the No.15 terminal (USA) or No.12 terminal (Canada) and body ground.
- If voltage is more than 8.5 V, the SRS indicator circuit is faulty (in the gauge assembly). Replace the gauge assembly and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Refer to Failure Mode Diagnostic Chart.
- If voltage is less than 8.5 V, the dashboard wire harness is faulty. Replace it and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Refer to Failure Mode Diagnostic Chart.