Mazda 6 2002, Workshop Manual

Page: 1070 / 1248

T–164
ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM]
End Of Sie
SECURITY LIGHT: DTC 13 (WDS OR EQUIVALENT: DTC B2431)
A6E817067000W06
Diagnostic procedure
End Of Sie
SECURITY LIGHT: DTC 14 (WDS OR EQUIVALENT: DTC B1602)
A6E817067000W07
Diagnostic procedure
End Of Sie
5 VERIFY WHETHER MALFUNCTION IS IN
COIL OR KEY
•
Using any other valid key, turn ignition switch
to ON position.
•
Does SST (WDS or equivalent) indicate DTC
B1600 again?
Yes Replace coil, then go to next step.
(See
T–90 COIL REMOVAL/INSTALLATION )
No
•
Dispose of defective key.
•
Duplicate key if necessary.
(See
T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE )
6 INSPECT PCM
•
Using registered key, turn ignition switch to
ON position.
•
Does SST (WDS or equivalent) indicate DTC
B1600 again?
Yes Replace PCM and reprogram immobilizer system.
(See
T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE )
No Troubleshooting is completed.
STEP INSPECTION ACTION
DTC 13 (B2431) ID number programing failure.
POSSIBLE
CAUSE
•
The procedure fails to program the transponder into PCM
STEP INSPECTION ACTION
1
VERIFY DTC USING SST
•
Does SST (WDS or equivalent) indicate DTC
B2431?
Yes Go to Step 3.
No Go to next step.
2 VERIFY DTC USING SST
•
Does SST (WDS or equivalent) indicate DTC
B1600?
Yes Go to SECURITY LIGHT: DTC 13 (WDS OR EQUIVALENT:
B1600).
No Go to next step.
3 INSPECT PCM
•
Erase key ID number using SST (WDS) and
register key ID number.
(See
T–90 IMMOBILIZER SYSTEM
REPROGRAM PROCEDURE )
•
Clear DTC with SST (WDS or equivalent).
•
Does SST (WDS or equivalent) indicate DTC
B2431 again?
Yes Replace PCM and reprogram immobilizer system.
(See
T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE )
No Troubleshooting is completed.
DTC 14 (B1602) PCM received invalid format of ID number from key (transponder)
POSSIBLE
CAUSE
•
Defective transponder in the key
•
Defective coil
•
Defective PCM
STEP INSPECTION ACTION
1 INSPECT FOR OTHER PROPER KEYS
•
Using any other valid key, turn ignition switch
to ON position.
•
Does security light or SST (WDS or
equivalent) indicate DTC 14 (B1602) again?
Yes Replace coil, then go to next step.
(See
T–90 COIL REMOVAL/INSTALLATION )
No
•
Dispose of defective key.
•
Duplicate key if necessary.
(See
T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE )
2 INSPECT PCM
•
Turn ignition switch to ON position with the
registered key.
•
Does security light or SST (WDS or
equivalent) indicate DTC 14 (B1602) again?
Yes Replace PCM and reprogram immobilizer system.
(See
T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE )
No Troubleshooting is completed.