SRS ± Post-collision Diagnosis
52B-27
POST-COLLISION DIAGNOSIS
Whether or not the air bags have deployed, check and service
the vehicle after collision as follows:
SRS-ECU MEMORY CHECK
1. Connect the MUT-II to the diagnosis connector. (Refer
to GROUP 00 ± How to Use Troubleshooting/Inspection
Service Points.)
Caution
Refer to that the ignition switch is LOCK (OFF) when
connecting or disconnecting MUT-II.
2. Read (and write down) all displayed diagnosis codes.
(Refer to P.52B-8.)
NOTE
If battery power supply has been shut down by the collision,
the MUT-II cannot communicate with the SRS-ECU. Check
and, repair if necessary, the instrument panel wiring
harness before the next job.
3. Use the the MUT-II to read the data list (how long trouble(s)
have continued and how often memory have been erased).
Data list
No Service Data Item Applicability
92 Number indication how often the memory is cleared. Maximum time to be stored: 250
93 How long problem have lasted (How long it takes
from the occurrence of the problem till the first air bag
squib igniting signal)
Maximum time to be stored: 9,999 minutes
(approximately 7 days)
94 How long problem(s) have lasted (How long it takes
from the first air bag squib igniting signal till now.)
4. Erase the diagnosis codes and after waiting 5 seconds
or more read (and write down) all displayed diagnosis
codes. (Refer to P.52B-8.)
REPAIR PROCEDURE
WHEN AIR BAGS (DRIVER'S SIDE AND FRONT
PASSENGER'S SIDE) DEPLOY OR SEAT BELT
PRE-TENSIONER OPERATES IN A COLLISION.
1. Replace the following parts with new ones.
D SRS-ECU (Refer to P.52B-34.)
D Driver's side air bag module (Refer to P.52B-36.)
D Front passenger's side air bag module (Refer to
P.52B-36.)
D Front impact sensor (Refer to P.52B-32.)
D Seat belt with pre-tensioner (Refer to P.52B-44.)
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