SRS ± Troubleshooting
52B-13
Code No.24, 25, 64, 65
Front passenger's air bag module (squib) system
Probable cause
Abnormal resistance is present between input terminals of front passenger's air
bag module (squib). See table below for what each code tells.
However, once trouble is extinguished, SRS-warning lamp will go out. (Diagnosis
code will remain stored)
D Defective wiring harnesses or connectors
D Malfunction of front passenger's air bag module
(squib)
D Malfunction of SRS-ECU
Code No. Trouble causes
24 D Short in front passenger's air bag module (squib) or short harness
25 D Open in front passenger's air bag module (squib) or open harness
D Poor connector contact*
64 D Short-circuit in front passenger's air bag module (squib) harness to power supply
65 D Short-circuit in front passenger's air bag module (squib) harness to earth
NOTE
*: The shorting bars, which short positive (+) and negative (±) wires to prevent the air bags from accidental deployment
during the disconnection of the connector, are set in the squib circuit connectors. In a defective connector, the short-bar
may be still working even after the connection of the connector.
NO
YES
Replace the front passenger's air bag module (squib).
OK
Check trouble symptoms.
NG
Repair
OK
Replace SRS-ECU.
NG
Check wiring harness between the front passenger's air bag
module and SRS-ECU.
NG
Repair
SRS check harness (MB991613)
Instrument panel wiring harness
Front passenger's air bag
module connector
MUT-II Self-diag code
D Disconnect front passenger's air bag module connector C-15,
and connect the harness side connector to SRS check
harness (MB991613) connector No.1.
D Connect negative (±) battery terminal.
D Erase diagnosis code memory.
Is code Nos.24, 25, 64 or 65 output?
Resistance (3 Ω)
1
Check the following connectors: C-15, C-32
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