( TL19E00K791000R411XFAAT00 )

DTC Troubleshooting: 41-1x

DTC 41-1x (‘‘x'' can be 0 thru 9 or A thru F):
No Signal From the Left Front Impact Sensor
NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information.
- 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 and retest.

1. Clear the DTC memory.

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

1. Read 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.

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

1. Do the battery terminal disconnection procedure , then wait for 3 minutes.

1. Check the connections between SRS unit connector A (39P) and the SRS unit, between the left engine compartment wire harness 2P connector and the left front impact sensor, and at left engine compartment wire harness 4P connector.

Are the connections OK?

YES | - | Go to Step 7 .
NO | - | Repair the poor connections and retest.

1. Disconnect SRS unit connector A (39P) from the SRS unit.

1. Connect an SRS short canceller (070AZ-SAA0100) to the No. 36 and the No. 37 terminals of SRS unit connector B (39P).

1. Disconnect the left engine compartment wire harness 2P connector from the left front impact sensor.

1. Measure the resistance between the No. 36 and the No. 37 terminals of SRS unit connector A (39P). There should be an open circuit or at least 1 MΩ.

Is the resistance as specified?

YES | - | Go to Step 11 .
NO | - | Short in the left engine compartment wire harness or dashboard wire harness; replace the faulty harness.■

1. Measure the resistance between the No. 36 terminal of SRS unit connector A (39P) and body ground, and between the No. 37 terminal and body ground. There should be an open circuit or at least 1 MΩ.

Is the resistance as specified?

YES | - | Go to Step 12 .
NO | - | Short to ground in the left engine compartment wire harness or dashboard wire harness; replace the faulty harness.■

1. Do the battery terminal reconnection procedure.

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

1. Measure the voltage between the No. 36 terminal of SRS unit connector A (39P) and body ground, and between the No. 37 terminal and body ground. There should be less than 1 V.

Is the voltage as specified?

YES | - | Go to Step 15 .
NO | - | Short to power in the left engine compartment wire harness or dashboard wire harness; replace the faulty harness.■

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

1. Install a jumper wire between the No. 1 and the No. 2 terminals of left engine compartment wire harness 2P connector.

1. Measure the resistance between the No. 36 and the No. 37 terminals of SRS unit connector A (39P). There should be less than 1 Ω.

Is the resistance as specified?

YES | - | Faulty left front impact sensor or SRS unit; replace the left front impact sensor. If the problem is still present, replace the SRS unit. ■
NO | - | Open in the left engine compartment wire harness or dashboard wire harness; replace the faulty harness.■