Special Tools Required
- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead L 070AZ-SNAA300
- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed. (See COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT ).
- Before doing this troubleshooting procedure, review SRS PRECAUTIONS AND PROCEDURES , General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ) and BATTERY TERMINAL DISCONNECTION AND RECONNECTION .
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software (see SRS UNIT UPDATE ) and retest.
- Clear the DTCs with the HDS (see CLEAR THE DTC MEMORY ).
- Turn the ignition switch to ON (II), then wait for 10 seconds.
- Check for the DTCs with the HDS (see READING THE DTC
).
Is DTC 41-1x indicated?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
- Turn the ignition switch to LOCK (0).
- Disconnect the negative cable from the battery, then wait at least 3 minutes.
- Check for these connector connections:
- SRS unit connector A (39P) and the SRS unit, (see step 10 under Disconnecting System Connectors ).
- Left front impact sensor 2P connector on the left engine compartment wire harness, (see FRONT IMPACT SENSOR REPLACEMENT ).
- C302 (see CONNECTOR TO FUSE/RELAY BOX INDEX ).
Are the connections OK?
YES - Go to step 7.
NO - Repair the poor connections, then clear the DTC, and retest. If DTC 41-1x is still present, go to step 7.
- Disconnect SRS unit connector A (39P) from the SRS unit (see step 10 under Disconnecting System Connectors ).
- Disconnect the left engine compartment wire harness 2P connector (A) from the left front impact sensor (see FRONT IMPACT SENSOR REPLACEMENT ).
- Measure the resistance between SRS unit connector A (39P) terminals No. 36 and No. 37.
Is there an open circuit, or at least 1 MΩ ?
YES - Go to step 10.
NO - Short to another wire in the left engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.
- Measure the resistance between body ground and SRS unit connector A (39P) terminals No. 36 and No. 37 individually.
Is there an open circuit, or at least 1 MΩ ?
YES - Go to step 11.
NO - Short to ground in the left engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.
- Reconnect the negative cable to the battery.
- Turn the ignition switch to ON (II).
- Measure the voltage between body ground and SRS unit connector A (39P) terminals No. 36 and No. 37 individually.
Is there less than 0.2 V?
YES - Go to step 14.
NO - Short to power in the left engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.
- Turn the ignition switch to LOCK (0).
- Connect the black terminals (A) of SRS simulator lead L to the SRS inflator simulator (jumper connector), and then connect SRS simulator lead L to the left front impact sensor 2P connector (B).
- Measure the resistance between SRS unit connector A (39P) terminals No. 36 and No. 37.
Is there less than 1.0 Ω ?
YES - Faulty left front impact sensor or SRS unit; replace the left front impact sensor (see FRONT IMPACT SENSOR REPLACEMENT ), then clear the DTC. If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ). If the DTC is still present; replace the faulty harness.
NO - Open in the left engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.