( TF09E85K791000R4311FAAT00 )

SRS DTC Troubleshooting: 43-11

DTC 43-11:

No Signal From the Left Side Impact Sensor (first)

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.

Is DTC 43-11 indicated?

YES	-	If DTC 43-11 is indicated alone, go to Step 4 . If DTC 43-11 and 45-11 are indicated, faulty left side impact sensor (first); replace the left side impact sensor (first). ■
NO	-	Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.

Are the connections OK?

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

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

Is the resistance as specified?

YES	-	Go to Step 10 .
NO	-	Short in the floor wire harness; replace the floor wire harness.■

Measure the resistance between No. 36 terminal of SRS unit connector B (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 11 .
NO	-	Short to ground in the floor wire harness; replace the floor wire harness.■

Measure the voltage between No. 36 terminal of SRS unit connector B (39P) and body ground, and between the No. 37 terminal and body ground. There should be less than 1.0 V.

Is the voltage as specified?

YES	-	Go to Step 14 .
NO	-	Short to power in the floor wire harness; replace the floor wire harness.■

Measure the resistance between the No. 2 terminal of the floor wire harness 4P connector and the No. 37 terminal of the SRS unit connector B (39P), and between the No. 3 terminal of the floor wire harness 4P connector and the No. 36 terminal of the SRS unit connector B (39P). There should be 0−1.0 Ω.

Is the resistance as specified?

YES	-	Go to Step 16 .
NO	-	Open in the floor wire harness; replace the floor wire harness.■

Is DTC 43-11 indicated?

YES	-	Faulty SRS unit; replace the SRS unit. ■
NO	-	Faulty left side impact sensor (first); replace the left side impact sensor (first). ■