SRS ± Troubleshooting
52B-14
Code No.26, 27, 66 or 67 Driver's side pre-tensioner (squib)
system
Probable cause
These diagnosis codes are output if there is abnormal resistance between the input
terminals of the driver's side pre-tensioner (squib).
The trouble causes for each diagnosis code No. are as follows.
D Malfunction of wiring harnesses or connectors
D Malfunction of driver's side pre-tensioner (squib)
D Malfunction of SRS-ECU
Code No. Trouble causes
26 D Short in driver's side pre-tensioner (squib) or harness short
27 D Open circuit in driver's side pre-tensioner (squib) or open harness
D Malfunction of connector contact
66 D Short in driver's side pre-tensioner (squib) harness leading to the power supply
67 D Short in driver's side pre-tensioner (squib) harness leading to the earth
Check the following connectors: D-36, D-41 <L.H. drive
vehicles>, D-38 <R.H. drive vehicles>
Repair
OK
Check trouble symptoms.
NG
Check wiring harness between the driver's side pre-tensioner and
SRS-ECU.
Repair
OK
Replace SRS-ECU.
NG
NG
Replace the driver's side pre-tensioner.
SRS check harness
(MB991613)
Check harness
MUT-II Self-diag code
D Disconnect the driver's side pre-tensioner connector D-41 <L.H. drive
vehicles>, D-38 <R.H. drive vehicles>
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.26, 27, 66 or 67 displayed?
Resistance (3 Ω)
YES NO
Resistance (3 Ω)
Check harness
Probe
(MB991222)
Body wiring harness
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