45-1x

SRS DTC Troubleshooting: 45-1x (x can be 0 thru 9 or A thru F)

DTC 45-1x ("x" can be 0 thru 9 or A thru F):No Signal From the Left Side Impact Sensor (second)

Special Tools Required

- SRS inflator simulator 07SAZ-TB4011A
- SRS simulator lead L 070AZ-SNAA300
NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures, Technician Safety Information General Troubleshooting Information, Initial Inspection and Diagnostic Overview and Battery Terminal Disconnection and Reconnection. Procedures

- 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, SRS Unit Update and retest.

1. Clear the DTC memory. Initial Inspection and Diagnostic Overview

2. Turn the ignition switch to ON (II), then wait for 10 seconds.

3. Read the DTC. Initial Inspection and Diagnostic Overview

Is DTC 45-1x indicated?
YES -
- If DTC 45-11 is indicated, go to step 4.

- If DTC 45-1x except 45-11 is indicated alone, faulty left side impact sensor; replace the left side impact sensor (second), Side Impact Sensor (Second) Replacement then clear the DTC.

- If DTC 43-11 and 45-11 are indicated, faulty left side impact sensor (first); replace the left side impact sensor (first), Side Impact Sensor (First) Replacement then clear the DTC.


NO - Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.


4. Turn the ignition switch to LOCK (0).

5. Disconnect the negative cable from the battery, then wait at least 3 minutes.

6. Disconnect the floor wire harness 4P connector from the left side impact sensor (first). Side Impact Sensor (First) Replacement

7. Disconnect the floor wire harness 2P connector (A) from the left side impact sensor (second). Side Impact Sensor (Second) Replacement






8. Measure the resistance between floor wire harness 2P connector terminals No. 1 and No. 2. There should be an open circuit or at least 1 MOhms.

Is the resistance as specified?
YES - Go to step 9.

NO - Short to another wire in the SRS floor wire harness; replace the floor wire harness, then clear the DTC.






9. Measure the resistance between body ground and floor wire harness 2P connector terminals No. 1 and No. 2, individually. There should be an open circuit or at least 1 MOhms.

Is the resistance as specified?
YES - Go to step 10.

NO - Short to ground in the floor wire harness; replace the floor wire harness, then clear the DTC.






10. Reconnect the negative cable to the battery.

11. Turn the ignition switch to ON (II).

12. Measure the voltage between body ground and floor wire harness 2P connector terminals No. 1 and No. 2, individually. There should be less than 0.2 V.

Is the voltage as specified?
YES - Go to step 13.

NO - Short to power in the floor wire harness; replace the floor wire harness, then clear the DTC.






13. Turn the ignition switch to LOCK (0).

14. Connect the SRS inflator simulator (jumper connector) and the black lead of simulator lead L to the floor wire harness 4P connector (A).






15. Measure the resistance between floor wire harness 2P connector terminals No. 1 and No. 2. There should be less than 1.0 Ohms.

Is the resistance as specified?
YES - Faulty left side impact sensor or SRS unit; replace the left side impact sensor (second), Side Impact Sensor (Second) Replacement then clear the DTC. If the problem is still present, replace the SRS unit. SRS Unit Replacement

NO - Open in the SRS floor wire harness; replace the floor wire harness, then clear the DTC.