Mazda 2002 6 - Page 1071

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM]
T–164–1
T
T–164 BODY ELECTRICAL SYSTEM
SECURITY LIGHT: DTC 15 (WDS OR EQUIVALENT: DTC B1601)
A6E817067000W08
Diagnostic procedure
End Of Sie
SECURITY LIGHT: DTC 21 (WDS OR EQUIVALENT: DTC B1213)
A6E817067000W09
Diagnostic procedure
ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM]
DTC 15 (B1601) PCM received incorrect ID number from key (transponder).
POSSIBLE
CAUSE
• No keys have been registered after installation of new PCM
• Unregistered key detected
• Attempt made to register a ninth key
Note
• A maximum of only eight keys can be registered for a single vehicle.
• Defective PCM
STEP INSPECTION ACTION
1 VERIFY REGISTERED KEY IN PCM
• Check following PID/DATA monitor using
SST (WDS or equivalent).
— NUMKEYS
• Does NUMKEYS display more than 0?
Yes Go to next step.
No Go to Step 3.
2 VERIFY REGISTERED KEY IN PCM
• Check following PID/DATA monitor using
SST (WDS or equivalent).
— NUMKEYS
• Does NUMKEYS display more than 8?
Yes • Erase key ID number using SST (WDS) and register key
ID number.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
• Go to next step.
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)
• Using registered key, turn ignition switch to
ON position.
• Does security light or SST (WDS or
equivalent) indicate DTC 15 (B1601) again?
Yes Replace PCM and reprogram immobilizer system.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
No Troubleshooting is completed.
DTC 21 (B1213) Number of valid keys is below minimum.
POSSIBLE
CAUSE
• Less than two valid keys
STEP INSPECTION ACTION
1
VERIFY NUMBER OF VALID KEYS
• Check following PID/DATA monitor with SST
(WDS or equivalent).
— NUMKEYS
• Does NUMKEYS display more than 2?
Note
• Two or more valid keys are necessary to
start engine.
Yes Replace PCM and reprogram immobilizer system.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
No • Erase key ID numbers and register necessary key ID
numbers.
• Go to next step.
2
VERIFY DTC
• Does security light or SST (WDS or
equivalent) indicate DTC 21 (B1213) again?
Yes Replace PCM and reprogram immobilizer system.
(See T–90 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE)
No Troubleshooting is completed.