SRS ± Troubleshooting
52B-10
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No.11, 12 or 13 Front impact sensor system Probable cause
These diagnostic trouble codes are output if there is abnormal resistance between
the input terminals of the front impact sensors.
The trouble causes for each diagnosis code No. are as follows.
D Malfunction of front impact sensor
D Malfunction of wiring harness of connectors
D Malfunction of SRS-ECU
Code No. Trouble Symptom
11 D Short circuit in front impact sensor or harness
D Short circuit in front impact sensor harness leading to the vehicle body ground
D Short circuit in front impact sensor harness leading to the power supply
12 D Open circuit in either left or right front impact sensor or harness
D Short circuit in front impact sensor harness leading to the power supply
13 D Open circuit in both left or right front impact sensor or harness
D Short circuit in front impact sensor harness leading to the power supply
Front impact sensor check. (Refer to P.52B-33)
NG
OK
OK
Measure at SRS-ECU connector C-32.
D Disconnect the connector and measure at the harness side.
D Connect negative (±) battery terminal.
D Ignition switch: ON
D Resistance between terminal 1 and 2
OK: 820 ± 82 Ω
D Resistance between terminal 3 and 4
OK: 820 ± 82 Ω
NG
Replace the SRS-ECU.
Check trouble symptoms.
Repair
Check the harness wire between the SRS-ECU and front impact
sensor
,
and repair if necessary.
NG
Check the following connectors:
A-51, A-49, C-28, C-32
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