Security Light: Dtc - Mazda 2002 6 Workshop Manual

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM]
STEP
8 INSPECT COIL OUTPUT SIGNAL CIRCUIT
• Turn ignition switch to LOCK position.
• Disconnect coil connector.
• Turn ignition switch to ON position.
• Measure voltage at terminal A of coil
connector.
• Is voltage more than 8 V?
9 INSPECT COMMUNICATION CIRCUIT
(OUTPUT) FOR CONTINUITY
• Turn ignition switch to LOCK position.
• Disconnect PCM connector.
• Is there continuity between coil connector
terminal A and PCM connector terminal 2Q?
10 INSPECT COIL OUTPUT SIGNAL CIRCUIT
• Measure resistance between PCM connector
terminal 2Q and ground.
• Is resistance more than 10 kilohms?
End Of Sie
SECURITY LIGHT: DTC 12 (WDS OR EQUIVALENT: DTC B2103)
DTC 12 (B2103) Coil failure.
• Defective Coil
POSSIBLE
• Poor connection of coil connector
CAUSE
Diagnostic procedure
STEP
INSPECT CONNECTOR CONNECTION
• Is connector of coil and PCM connected
—
securely?
End Of Sie
SECURITY LIGHT: DTC 13 (WDS OR EQUIVALENT: DTC B1600)
DTC 13 (B1600) ID number is not received.
• No transponder in the key
• Defective transponder in the key (ID number is not output.)
POSSIBLE
• Defective coil
CAUSE
• Defective PCM
Diagnostic procedure
STEP
1 VERIFY DTC USING SST
• Does SST (WDS or equivalent) indicate DTC
B1600?
2 VERIFY DTC USING SST
• Does SST (WDS or equivalent) indicate DTC
B2431?
3 VERIFY VALID KEY
• Is there any key, other than the one that
caused displayed DTC, which can start the
engine?
4 VERIFY WHETHER MALFUNCTION IS IN
COIL OR KEY
• Using SST (WDS or equivalent) register an
additional key.
(See T–90 IMMOBILIZER SYSTEM
REPROGRAM
• Using registered key, turn ignition switch to
ON position.
• Does SST (WDS or equivalent) indicate DTC
B1600 again?
INSPECTION
INSPECTION
INSPECTION
PROCEDURE)
Yes Replace coil.
(See T–90 COIL REMOVAL/INSTALLATION)
No Go to next step.
Yes Go to next step.
No Repair wiring harness.
Yes Replace PCM and reprogram immobilizer system.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
No Repair wiring harness.
Yes Replace coil.
(See T–90 COIL REMOVAL/INSTALLATION)
No Connect connector securely.
Yes Go to Step 3.
No Go to next step.
Yes Go to SECURITY LIGHT: DTC 13 (WDS OR EQUIVALENT:
B2431).
No Go to next step.
Yes Go to Step 5.
No Go to next step.
Yes Replace coil, then go to step 6.
(See T–90 COIL REMOVAL/INSTALLATION)
• Dispose of defective key.
No
• Duplicate key if necessary.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
ACTION
A6E817067000W04
ACTION
A6E817067000W05
ACTION
T–163
T