SRS Indicator Light Doesn't Come On
SRS Indicator Circuit TroubleshootingThe SRS Indicator Doesn't Come On
1. Turn the ignition switch ON (II), and check to see if the other indicators come on (brake system, etc).
Do the other indicators come on?
YES - Go to step 2.
NO - Go to step 8.
2. Turn the ignition switch OFF, then disconnect gauge assembly connector B (14P) and C (18P) from the gauge assembly.
3. Check resistance between the No. 9 (or No. 10) terminals of gauge assembly connector A (14P) and body ground. There should be 0 - 1.0 Ohm.
Is the resistance as specified?
YES - Go to step 4.
NO - Open in the BLK wire of dashboard wire harness A or faulty body ground terminal (G501), If the body ground terminal is OK, replace dashboard wire harness A.
4. Check for voltage between the No. 17 terminal of gauge assembly connector C (18P) and body ground within the first 6 seconds after turning the ignition switch ON (II). There should be 8.5 V or less.
Is the voltage as specified?
YES - Faulty SRS indicator circuit in the gauge assembly; replace the gauge assembly.
NO - Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect the SRS unit connector C (8P) from the SRS unit.
7. Connect a voltmeter between the No. 17 terminal (+) of gauge assembly connector C (18P) and body ground. Turn the ignition switch ON (II), and measure the voltage. There should be 0.5 V or less.
Is the voltage as specified?
YES - Faulty SRS unit; replace the SRS unit.
NO - Short to power in the BLU wire of dashboard wire harness A; replace dashboard wire harness A.
8. Turn the ignition switch OFF. Check the No. 9 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse blow?
YES - Go to step 10.
NO - Go to step 9.
9. Connect a voltmeter between the No. 7 terminal (+) of gauge assembly connector A (14P) and body ground. Turn the ignition switch ON (II), and measure the voltage. There should be battery voltage.
Is there battery voltage?
YES - Faulty SRS indicator circuit in the gauge assembly or poor contact at the gauge assembly connector A (14P) and gauge assembly; if the connection is OK, replace the gauge assembly.
NO - Open in the driver's under-dash fuse/relay box No. 10 (7.5 A) fuse line or open in the YEL wire of dashboard wire harness A. If the driver's under-dash fuse/relay box is OK, replace dashboard wire harness A.
10. Replace the No. 9 (7.5 A) fuse, and check to see if the SRS indicator comes on.
Do the indicators come on?
YES - The system is OK at this time.
NO - Repair the short to ground in the driver's under-dash fuse/relay box No. 9 (7.5 A) fuse circuit.