Mazda CX 7. Manual - part 335

 

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Mazda CX 7. Manual - part 335

 

 

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–11

09-02C

SECURITY LIGHT 15, DTC B1601/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801100

Diagnostic Procedure

End Of Sie

SECURITY LIGHT: 15

The instrument cluster has detected unregistered key ID number.

 DTC: B1601/P1260

DETECTION CONDITION

• The instrument cluster has detected unregistered key ID number.

POSSIBLE CAUSE

• No keys have been registered after replacing the instrument cluster.

• Unregistered key used

• Attempt made to register a ninth key

• Instrument cluster malfunction

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02C-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (KEYLESS 
ENTRY SYSTEM)].)

• Are one or more keys registered?

Yes

Go to the next step.

No

Go to Step 3.

2

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02C-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (KEYLESS 
ENTRY SYSTEM)].)

• Are eight keys registered?

Yes

Using the M-MDS, clear the key ID numbers as 
necessary, then go to the next step.

No

Go to the next step.

3

INSPECT INSTRUMENT CLUSTER

• Using the M-MDS, register the key ID number.

 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

Note

• Two or more keys must be registered to 

start the engine.

• Using the registered key, turn the ignition switch 

to the ON position.

• Is the DTC displayed again?

— Security light: 15

— M-MDS: B1601/P1260

Yes

Replace the instrument cluster and perform the 
resetting procedure for the immobilizer system when 
replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

1871-1U-06B(09-02C).fm  11 ページ  2006年3月15日 水曜日 午前11時39分

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–12

SECURITY LIGHT 16, DTC U2510/P1260, U1147/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801200

Diagnostic Procedure

End Of Sie

SECURITY LIGHT 21, DTC B1213/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801300

Diagnostic Procedure

SECURITY 
LIGHT: 16

 DTC: U2510/P1260

Communication error between the instrument cluster and the PCM (no response)

 DTC: U1147/P1260

Communication error between the instrument cluster and the PCM (mismatched 
conditions)

DETECTION CONDITION

Instrument cluster DTC: U2510

• Communication error between the instrument cluster and the PCM (no response)

Instrument cluster DTC: U1147

• Communication error between the instrument cluster and the PCM (mismatched 

conditions)

POSSIBLE CAUSE

• Malfunction in the wiring harness (CAN line) between the instrument cluster and the 

PCM

• PCM malfunction

• Instrument cluster malfunction

STEP

INSPECTION

ACTION

1

VERIFY DTC 

• Are either U1900 or U0073, or both, displayed, 

by either the instrument cluster or the PCM, or 
both?

Yes

Perform troubleshooting according to the corresponding 
DTC inspection.
 (See 09-02D-14 DTC U0073[MULTIPLEX 
COMMUNICATION SYSTEM].)

No

Replace the instrument cluster and perform the 
resetting procedure for the immobilizer system when 
replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[KEYLESS ENTRY SYSTEM].)
Go to the next step.

2

VERIFY DTC

• Using the registered key, turn the ignition switch 

to the ON position.

• Is the DTC displayed?

— Security light: 16

— M-MDS: U2510 or U1147/P1260

Yes

Replace the PCM and perform the resetting procedure 
for the immobilizer system when replacing the PCM.
 (See 01-40-6 PCM REMOVAL/INSTALLATION[L3 
WITH TC].)
 (See 09-14-20 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

SECURITY LIGHT: 21

Only one key ID number is registered.

 DTC: B1213/P1260

DETECTION CONDITION

• Only one key is registered.

POSSIBLE CAUSE

• Only one registered key

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF REGISTERED KEYS

• Using the M-MDS, perform the PID/data monitor 

inspection and confirm the number of registered 
keys.
 (See 09-02C-4 PID/DATA MONITOR 
TABLE[IMMOBILIZER SYSTEM (KEYLESS 
ENTRY SYSTEM)].)

• Are two or more keys registered?

Yes

Replace the instrument cluster and perform the 
resetting procedure for the immobilizer system when 
replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[KEYLESS ENTRY SYSTEM].)

No

• Using the M-MDS, clear the key ID number and 

register a new key if necessary.
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Go to the next step.

1871-1U-06B(09-02C).fm  12 ページ  2006年3月15日 水曜日 午前11時39分

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–13

09-02C

End Of Sie

SECURITY LIGHT 22, DTC B2141/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801400

Diagnostic Procedure

End Of Sie

2

VERIFY DTC

• Using the registered key, turn the ignition switch 

to the ON position.

• Is the DTC displayed again?

— Security light: 21

— M-MDS: B1213/P1260

Yes

Replace the instrument cluster and perform the 
resetting procedure for the immobilizer system when 
replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER REMOVAL/
INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM COMPONENT 
REPLACEMENT/KEY ADDITION AND 
CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

SECURITY LIGHT: 22

Communication error between the instrument cluster and the PCM (data transfer error)

 DTC: B1241/P1260

DETECTION CONDITION

• Communication error between the instrument cluster and the PCM (data transfer error)

POSSIBLE CAUSE

• Malfunction in the wiring harness (CAN line) between the instrument cluster and the PCM

• Instrument cluster malfunction

• PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY DTC

• Are either U1900 or U0073, or both displayed, by 

either the instrument cluster or the PCM, or both?

Yes

Perform troubleshooting according to the 
corresponding DTC inspection.
 (See 09-02D-14 DTC U0073[MULTIPLEX 
COMMUNICATION SYSTEM].)

No

Go to the next step.

2

VERIFY DTC

• Using the registered key, turn the ignition switch to 

the ON position.

• Is the DTC displayed?

— Security light: 22

— M-MDS: B2141/P1260

Yes

• Replace the PCM and perform the resetting 

procedure for the immobilizer system when 
replacing the PCM.
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Go to the next step.

No

DTC troubleshooting completed.

3

EXAMINE INSTRUMENT CLUSTER AND PCM

• Is the DTC displayed again?

— Security light: 22

— M-MDS: B2141/P1260

Yes

• Replace the instrument cluster and perform the 

resetting procedure for the immobilizer system 
when replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER 
REMOVAL/INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Go to the next step.

No

DTC troubleshooting completed.

4

EXAMINE PCM

• Is the DTC displayed again?

— Security light: 22

— M-MDS: B2141/P1260

Yes

• Replace the PCM and perform the resetting 

procedure for the immobilizer system when 
replacing the PCM.
 (See 01-40-6 PCM REMOVAL/
INSTALLATION[L3 WITH TC].)
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

1871-1U-06B(09-02C).fm  13 ページ  2006年3月15日 水曜日 午前11時39分

ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

09-02C–14

SECURITY LIGHT 23, DTC B2139/P1260[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801500

Diagnostic Procedure

End Of Sie

DTC B1342[IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801600

Diagnostic procedure

End Of Sie

SECURITY LIGHT: 23

ID number data in the PCM and the instrument cluster do not match.

 DTC: B2139/P1260

DETECTION CONDITION

• ID number data in the instrument cluster and the PCM are different.

POSSIBLE CAUSE

• Necessary procedures were not performed using the M-MDS after replacing the PCM.

• Instrument cluster malfunction

• PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY DTC

• Are either U1900 or U0073, or both, displayed, by 

either the instrument cluster or the PCM, or both?

Yes

Perform troubleshooting according to the 
corresponding DTC inspection.
 (See 09-02D-14 DTC U0073[MULTIPLEX 
COMMUNICATION SYSTEM].)

No

Go to the next step.

2

EXAMINE INSTRUMENT CLUSTER AND PCM

• Perform procedures for when replacing the PCM 

only.
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Using the registered key, turn the ignition switch to 

the ON position.

• Is the DTC displayed?

— Security light: 23

— M-MDS: B2139/P1260

Yes

• Replace the instrument cluster and perform the 

resetting procedure for the immobilizer system 
when replacing the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER 
REMOVAL/INSTALLATION.)
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

• Go to the next step.

No

DTC troubleshooting completed.

3

VERIFY DTC

• Is the DTC displayed again?

— Security light: 23

— M-MDS: B2139/P1260

Yes

• Replace the PCM and perform the resetting 

procedure for the immobilizer system when 
replacing the PCM.
 (See 01-40-6 PCM REMOVAL/
INSTALLATION[L3 WITH TC].)
 (See 09-14-20 IMMOBILIZER SYSTEM 
COMPONENT REPLACEMENT/KEY ADDITION 
AND CLEARING[KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

DTC B1342

ECU is faulted

DETECTION 
CONDITION

Instrument cluster malfunction

POSSIBLE 
CAUSE

• Instrument cluster malfunction

ACTION

Replace the instrument cluster.
 (See 09-22-2 INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

1871-1U-06B(09-02C).fm  14 ページ  2006年3月15日 水曜日 午前11時39分

 

 

 

 

 

 

 

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