Failure Mode H
Failure Mode H: SRS Indicator Wire Harness Short or OpenSRS Main Harness Connector:
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.
- 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) (RED) on the airbag(s).
Test Harness B Installation And Testing:
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 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. Failure Mode Diagnostic Chart
- If there is no continuity, go to step 7.
Test Harness B Pinout:
7. Check for continuity between the B11 terminal of Test Harness B (O7MAZ-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. 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. Failure Mode Diagnostic Chart
Dashboard Wiring Harness 5-Pin Connector:
8. Reconnect the SRS main harness 4-P connector to the main wire harness. Disconnect the dashboard wire harness 5-P connector from the gauge assembly.
Dashboard Wiring Harness 5-Pin Connector Pinout:
9. Turn the ignition switch ON and wait for six seconds. Measure the voltage between the No. 5 terminal and body ground.
- If voltage is more than 8.5 V, the SRS indicator circuit is faulty (in the gauge assembly). Replace the SRS indicator circuit assembly and recheck the voltages according to the appropriate Failure Mode Diagnostic Chart. Failure Mode Diagnostic Chart
- It 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. Failure Mode Diagnostic Chart