46-1x
SRS DTC Troubleshooting: 44-1x, 46-1x (x can be 0 thru 9 or A thru F)
DTC 44-1x ("x" can be 0 thru 9 or A thru F):No Signal From the Right Side Impact Sensor (first)
DTC 46-1x ("x" can be 0 thru 9 or A thru F):No Signal From the Right 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, Service and Repair General Troubleshooting Information, Initial Inspection and Diagnostic Overview and Battery Terminal Disconnection and Reconnection. Procedures
1. Clear the DTC memory. Initial Inspection and Diagnostic Overview
2. Turn the ignition switch to ON (II), and wait for 10 seconds.
3. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC 46-1x (except 46-11) indicated?
YES - Faulty right side impact sensor (second); replace the right side impact sensor (second). Side Impact Sensor (Second) Replacement
NO - Go to step 4.
4. Read the DTC.
Is DTC 44-1x (except 44-11) indicated?
YES - Faulty right side impact sensor (first); replace the right side impact sensor (first). Side Impact Sensor (First) Replacement
NO - Go to step 5.
5. Read the DTC.
Is DTC 44-11 indicated?
YES - Go to step 6.
NO - Intermittent failure, the system is OK at this time.
6. Turn the ignition switch to LOCK (0).
7. Check for damage to the floor wire harness between the SRS unit and right side impact sensor (first), right side impact sensor (first), and right side impact sensor (second).
Is the floor wire harness OK?
YES - Go to step 8.
NO - Replace the floor wire harness.
8. Disconnect the negative cable from the battery, then wait for 3 minutes.
9. Replace the right side impact sensor (first) with a known-good part. Side Impact Sensor (First) Replacement
10. Clear the DTC memory. Initial Inspection and Diagnostic Overview
11. Turn the ignition switch to ON (II), and wait for 10 seconds.
12. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC 44-11 indicated?
YES - Go to step 13.
NO - Faulty right side impact sensor (first); replace the original right side impact sensor (first). Side Impact Sensor (First) Replacement
13. Turn the ignition switch to LOCK (0).
14. Disconnect the negative cable from the battery, then wait for 3 minutes.
15. Replace the right side impact sensor (second) with a known-good part. Side Impact Sensor (Second) Replacement
16. Clear the DTC memory. Initial Inspection and Diagnostic Overview
17. Turn the ignition switch to ON (II), and wait for 10 seconds.
18. Read the DTC. Initial Inspection and Diagnostic Overview
Is DTC 44-11 indicated?
YES - Go to step 19.
NO - Faulty right side impact sensor (second); replace the original right side impact sensor (second). Side Impact Sensor (Second) Replacement
19. Turn the ignition switch to LOCK (0).
20. Disconnect the negative cable from the battery, then wait for 3 minutes.
21. Disconnect both seat belt tensioner 4P connectors. Service and Repair
22. Disconnect SRS unit connector B (28P) from the SRS unit. Service and Repair
23. Disconnect the floor wire harness 2P connector (A) from the right side impact sensor (second). Side Impact Sensor (Second) Replacement
24. Disconnect the floor wire harness 4P connector (A) from the right side impact sensor (first). Side Impact Sensor (First) Replacement
25. Measure the resistance between the terminal No. 2 and No. 3 of the floor wire harness 4P connector. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 26.
NO - Short in the floor wire harness; replace the floor wire harness.
26. Measure the resistance between the terminal No.1 and No. 4 of the right side wire harness 4P connector. There should be an open circuit or at least 1MOhms.
Is the resistance as specified?
YES - Go to step 27.
NO - Short in the floor wire harness; replace the floor wire harness.
27. Measure the resistance between the terminal No. 2 of floor wire harness 4P connector and body ground, and between the terminal No. 3 and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 28.
NO - Short to ground in the floor wire harness; replace the floor wire harness.
28. Measure the resistance between the terminal No. 1 of floor wire harness 4P connector and body ground, and between the terminal No. 4 and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES - Go to step 29.
NO - Short to ground in the floor wire harness; replace the floor wire harness.
29. Reconnect the negative cable to the battery.
30. Turn the ignition switch to ON (II).
31. Measure the voltage between the terminal No. 2 of floor wire harness 4P connector and body ground, and between the terminal No. 3 and body ground. There should be less than 0.2 V.
Is the voltage as specified?
YES - Go to step 32.
NO - Short to power in the floor wire harness; replace the floor wire harness.
32. Turn the ignition switch to LOCK (0).
33. Install a jumper wire between the terminal No. 27 and terminal No. 28 of the SRS unit connector B (28P).
34. Measure the resistance between the terminal No. 2 and No. 3 of the floor wire harness 4P connector. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES - Go to step 35.
NO - Open in the floor wire harness; replace the floor wire harness.
35. Connect the SRS inflator simulator (jumper connector) and the black lead (A) of simulator lead L to the floor wire harness 2P connector (B).
36. Measure the resistance between the terminal No. 1 and No. 4 of the floor wire harness 4P connector. There should be less than 1.0 Ohms.
Is the resistance as specified?
YES - Reconnect the floor wire harness 4P connector to the right side impact sensor (first) and right side impact sensor (second). If the DTCs are still indicated, replace the SRS unit. SRS Unit Replacement
NO - Open in the floor wire harness; replace the floor wire harness.
