Mazda 2002 6 - Security Light: Dtc

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