Lancer LS L4-2.0L SOHC (2002)
Repairs and Inspections Required After a Collision: Service and Repair
Air Bag Systems
To inspect and service the SRS after a collision (whether or not the air bags have deployed), perform the following steps.
SRS-ECU MEMORY CHECK
Required Special Tool:
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MB991502: Scan tool (MUT-II)
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector (16-pin).
2. Read (and write down) all displayed diagnostic trouble codes.
NOTE: If the battery power supply has been disconnected or disrupted by the collision, scan tool MB991502 cannot communicate with the
SRS-ECU. Check the battery then check and, if necessary, repair the front wiring harness and the body wiring harness before proceeding.
Data List
3. Read the data list (fault duration and how many times memories are erased) using scan tool MB991502.
4. Erase the diagnostic trouble codes and, after waiting 5 seconds or more, read (and write down) all displayed diagnostic trouble codes.
REPAIR PROCEDURE
WHEN FRONT AIR BAGS DEPLOY IN A COLLISION.
1. Replace the following parts with new ones.
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SRS-ECU
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Air bag module
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Seat belt with pre-tensioner
2. Check the following parts and replace if there are any malfunctions.
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Clock spring
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Steering wheel, steering column and shaft assembly
1. Check the wiring harness (built into the steering wheel) and connectors for damage, and terminals for deformation.
2. Install the air bag module to check fit or alignment with the steering wheel.
3. Check the steering wheel for noise, binds or difficult operation and excessive free play.
3. Check the wiring harnesses for binding, the connectors for damage, poor connections, and the terminals for deformation.
