SRS ± Troubleshooting
52B-20
Check the following connectors: D-32, D-36
Repair
OK
Check trouble symptoms.
NG
Check wiring harness between the side air bag module (L.H.)
and SRS-ECU.
Repair
OK
Replace SRS-ECU.
NG
NG
Replace the seat back assembly (L.H.)
SRS check harness
(MB991613)
Check harness
MUT-II Self-diag code
D Disconnect the side air bag module (L.H.) connector D-32
D Insert the probe (MB991222) from the rear of the harness side connector
and connect the check harness to the probe.
Caution
Never insert the probe directly to the terminals from the front of
the connector.
D Disconnect the resistance connector from the SRS check harness
(MB991613) and connect to the check harness.
D Connect the negative (±) battery terminal.
D Erase diagnosis code memory.
Is code No.81, 82, 85 or 86 displayed?
Resistance (3 Ω)
YES NO
Resistance (3 Ω)
Check harness
Probe
(MB991222)
Body wiring harness
Code No.89 or No.96 Side impact sensor (R.H.)
communication system
Probable cause
These diagnosis codes are output if communication between the side impact sensor
(R.H.) and the SRS±ECU is not possible (code No.89) or abnormal (code No.96)
D Malfunction of wiring harnesses or connectors
D Malfunction of side impact sensor (R.H.)
D Malfunction of SRS-ECU
NO
YES
Replace the side impact sensor (R.H.).
OK
Replace the SRS-ECU.
MUT-II Self-diag code
D Switch over the side impact sensor (R.H.) and the side impact
sensor (L.H.).
D Erase diagnosis code memory.
Are code Nos.89 and 96 erased and code Nos.79 and 93 output?
OK
NG
Repair
NG
NG
Repair
Check the following connectors: D-10, D-36
Check the harness wire between the side impact sensor (L.H.)
and SRS-ECU.
Check trouble symptoms.
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