Mazda CX 7. Manual - part 248

 

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Mazda CX 7. Manual - part 248

 

 

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–11

05-03

NO.1 VEHICLE DOES NOT MOVE IN D RANGE, OR IN R POSITION[AW6A-EL, AW6AX-EL]

id050310800600

Diagnostic procedure

End Of Sie

1

Vehicle does not move in D range, or in R position

DESCRIPTION

• Vehicle does not move when accelerator pedal is depressed.

POSSIBLE 

CAUSE

• If the vehicle does not move in D range or R position, basically, the malfunction is in the ATX. (Vehicle 

will move even with a malfunction in the TCM.) Since a malfunction is in the sensor circuit or output 
circuit is the cause of the malfunction in the ATX, inspect the sensors, output circuit, and the related 
wiring harnesses.

— Clutch slippage, worn (D range-C1 clutch, One-way clutch, R position-C3 clutch, B2 brake)

• Line pressure low

• Shift solenoid C malfunction

• Shift solenoid D malfunction

• Shift solenoid E malfunction

• Line pressure control solenoid malfunction

• Shift solenoid F malfunction

• Sensor GND malfunction

• Body GND malfunction

• Control valve body malfunction

— Selector lever malfunction

— Parking mechanism not operating properly

— Torque converter malfunction

— N position learning is not performed

Note

• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board 

Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC 
INSPECTION[AW6A-EL, AW6AX-EL].)

STEP

INSPECTION

ACTION

1

• When the vehicle is stopped on a flat, level 

road and the engine off, does the vehicle 
move when pushed? (in D range or N, R 
positions with the brake pedal released)

Yes

Go to the next step.

No

Inspect for parking mechanism.

2

• Start the engine.

• Does vehicle move when selector lever in 

between N position and D range?

Yes

Inspect or adjust selector lever.
(See 05-18-6 SELECTOR LEVER INSPECTION.)
(See 05-18-7 SELECTOR CABLE ADJUSTMENT.)
Perform N position learning.
(See 05-17-25 TCM REMOVAL/INSTALLATION[AW6A-EL, 
AW6AX-EL].)

No

Go to the next step.

3

• Stop the engine.

• Inspect following solenoid.

 (See 05-17-20 SOLENOID VALVE 
INSPECTION[AW6A-EL, AW6AX-EL].)
— Shift solenoid C

— Shift solenoid D

— Shift solenoid E

— Shift solenoid F

— Line pressure control solenoid

• Are these normal?

Yes

Replace the ATX (clutch slippage, worn)
(See 05-17-29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

No

Inspect the coupler component.
If normal, replace the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

4

• Verify test results.

— If normal, return to the diagnostic index to service any additional symptoms.

— If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform 

repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.

1871-1U-06B(05-03).fm  11 ページ  ２００６年３月１５日　水曜日　午前１１時１９分

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–12

NO.2 VEHICLE MOVES IN N POSITION[AW6A-EL, AW6AX-EL]

id050310800700

Diagnostic procedure

End Of Sie

NO.3 VEHICLE MOVES IN P POSITION, OR PARKING GEAR DOES NOT DISENGAGE WHEN P IS 
DISENGAGED[AW6A-EL, AW6AX-EL]

id050310800800

End Of Sie

NO.4 EXCESSIVE CREEP[AW6A-EL, AW6AX-EL]

id050310800900

2

Vehicle moves in N position

DESCRIPTION

• Vehicle creeps in N position.

• Vehicle creeps if brake pedal is not depressed in N position.

POSSIBLE 

CAUSE

• If the vehicle moves in N position, basically, the malfunction is in the ATX. Since a malfunction in the 

sensor circuit or output circuit is the cause of the malfunction in the ATX, inspect the sensors, output 
circuit, and the related wiring harnesses.

— Clutch burnt (C1 clutch, C3 clutch, One-way clutch)

• Line pressure low

• Shift solenoid C malfunction

• Shift solenoid E malfunction

• Line pressure control solenoid malfunction

• Control valve body malfunction

— Selector lever position disparity (Although the selector indicator shows N position, the hydraulic 

circuit shows D range or R position)

• N position learning is not performed

Note

• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board 

Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC 
INSPECTION[AW6A-EL, AW6AX-EL].)

STEP

INSPECTION

ACTION

1

• Does the vehicle creep when selector lever is 

moved slightly in N position?

Yes

Go to the next step.

No

Inspect and adjust the selector lever.
(See 05-18-6 SELECTOR LEVER INSPECTION.)
(See 05-18-7 SELECTOR CABLE ADJUSTMENT.)
Perform N position learning.
(See 05-17-25 TCM REMOVAL/INSTALLATION[AW6A-EL, 
AW6AX-EL].)

2

• Inspect following solenoid.

(See 05-17-20 SOLENOID VALVE 
INSPECTION[AW6A-EL, AW6AX-EL].)
— Shift solenoid C

— Shift solenoid D

• Are these solenoids normal?

Yes

Replace the ATX (clutch slippage, worm).
(See 05-17-29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

No

Inspect the coupler component.
If normal, replace the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

3

• Verify test results.

— If normal, return to the diagnostic index to service any additional symptoms.

— If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform 

repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.

3

Vehicle moves in P position, or parking gear does not disengage when P is disengaged

DESCRIPTION

• Vehicle rolls on a downward slope in P position.

• Tires are locked when P is disengaged. Vehicle does not move in D range, and R position when the 

accelerator pedal is depressed, and the engine remains in a stalled condition.

POSSIBLE 

CAUSE

• Parking mechanism malfunction (May have effect on noise or shock from transaxle)

• Improper adjustment of selector lever

• If the vehicle moves in N position, perform No.2 “VEHICLE MOVES IN N POSITION”

4

Excessive creep

DESCRIPTION

• Vehicle accelerates in D range, and R position when accelerator pedal is not depressed.

POSSIBLE 

CAUSE

• Engine idle speed is high (transaxle system is not cause of problem)

• Go to No.9 “FAST IDLE/RUNS ON” 

(See 01-03-37 NO.9 FAST IDLE/RUNS ON[L3 WITH TC].)

1871-1U-06B(05-03).fm  12 ページ  ２００６年３月１５日　水曜日　午前１１時１９分

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–13

05-03

End Of Sie

NO.5 NO CREEP AT ALL[AW6A-EL, AW6AX-EL]

id050310801000

Diagnostic procedure

*

: If case of shift solenoid C failure

End Of Sie

5

No creep at all

DESCRIPTION

• Vehicle does not move in D range and R position when idling on a flat paved road.

POSSIBLE 

CAUSE

• Either engine output low or there is clutch slippage.

— Clutch burnt (C1 clutch, C3 clutch)

• Line pressure low

• Shift solenoid C malfunction

• Shift solenoid D malfunction

• Shift solenoid E malfunction

• Line pressure control solenoid malfunction

• Shift solenoid F malfunction

• Body GND malfunction

• Control valve body malfunction

— Transaxle fixed in 3GR or 5GR* (Operation of fail-safe function)

• Short or open circuit in wiring harness

• Poor connection of connector

• Malfunction of electronic parts of output and input system

— There is no engine torque

• Torque converter malfunction

Note

• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board 

Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC 
INSPECTION[AW6A-EL, AW6AX-EL].)

STEP

INSPECTION

ACTION

1

• Does the vehicle creep in P and/or N 

position?

Yes

Inspect or adjust the selector lever.
 (See 05-18-6 SELECTOR LEVER INSPECTION.)
 (See 05-18-7 SELECTOR CABLE ADJUSTMENT.)

No

Go to the next step.

2

• Stop the engine.

• Inspect following solenoid.

(See 05-17-20 SOLENOID VALVE 
INSPECTION[AW6A-EL, AW6AX-EL].)
— Shift solenoid C

— Shift solenoid D

— Shift solenoid E

— Shift solenoid F

— Line pressure control solenoid

• Are these solenoids normal?

Yes

Go to the next step.

No

Inspect the coupler component.
If normal, replace the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

3

• Remove the torque converter.

(See 05-17-46 TORQUE CONVERTER 
REMOVAL/INSTALLATION[AW6A-EL, 
AW6AX-EL].)

• Inspect the torque converter.

• Is the torque converter normal?

Yes

Inspect the ATF condition.

• If a large amount of metal specks are found, replace the 

transaxle.
(See 05-17-29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

• If a large amount of metal specks are not found, replace 

the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

No

Replace the torque converter.

4

• Verify test results.

— If normal, return to the diagnostic index to service any additional symptoms.

— If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform 

repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.

1871-1U-06B(05-03).fm  13 ページ  ２００６年３月１５日　水曜日　午前１１時１９分

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]

05-03–14

NO.6 LOW MAXIMUM SPEED AND POOR ACCELERATION[AW6A-EL, AW6AX-EL]

id050310801100

Diagnostic procedure

6

Low maximum speed and poor acceleration

DESCRIPTION

• Vehicle acceleration is poor at start.

• Delayed acceleration when accelerator pedal is depressed while driving.

POSSIBLE 

CAUSE

• If the clutch is stuck or does not stay in 4GR, malfunction is in engine circuit.

— Clutch slippage, burnt (C1 clutch, C2 clutch, C3 clutch, B1 brake)

• Line pressure low

• Incorrect accelerator opening signal

• VSS malfunction

• Input/turbine speed sensor malfunction

• Sensor GND malfunction

• Shift solenoid C malfunction

• Shift solenoid D malfunction

• Shift solenoid E malfunction

• Line pressure control solenoid malfunction

• Shift solenoid F malfunction

• Body GND malfunction

• Control valve body malfunction

— Transaxle fixed in 3GR or 5GR* (Operation of fail-safe function)

• Short or open circuit in wiring harness

• Poor connection of connector

• Malfunction of electronic parts of output and input system

— Insufficient starting torque (Suspected when in-gear, shift control and engine circuit are normal)

• Torque converter malfunction (Poor operation, stuck)

Note

• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board 

Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC 
INSPECTION[AW6A-EL, AW6AX-EL].)

STEP

INSPECTION

ACTION

1

• With the ignition switch at the ON position, 

does the gear position indicator light 
indication correspond to the selector lever 
position?

Yes

Go to the next step.

No

Go to No.27 “GEAR POSITION INDICATOR LIGHT DOES 
NOT ILLUMINATE IN M RANGE”, or No.28 “GEAR 
POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE 
OR P, N, R POSITIONS”.

2

• Go to No.12 “LACK/LOSS OF POWER 

(ACCELERATION/CRUISE)”.
 (See 01-03-46 NO.12 LACK/LOSS OF 
POWER (ACCELERATION/CRUISE)[L3 
WITH TC].)

• Does engine control system normal?

Yes

Go to the next step.

No

Repair or replace any malfunctioning parts according to the 
inspection results.

3

• Stop the engine.

• Inspect following solenoid.

(See 05-17-20 SOLENOID VALVE 
INSPECTION[AW6A-EL, AW6AX-EL].)
— Shift solenoid C

— Shift solenoid D

— Shift solenoid E

— Shift solenoid F

— Line pressure control solenoid

• Are they normal?

Yes

Go to the next step.

No

Inspect the coupler component.
If normal, replace the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

4

• Remove the torque converter.

(See 05-17-46 TORQUE CONVERTER 
REMOVAL/INSTALLATION[AW6A-EL, 
AW6AX-EL].)

• Inspect the torque converter.

• Is the torque converter normal?

Yes

Inspect the ATF condition.

• If a large amount of metal specks are found, replace the 

transaxle.
(See 05-17-29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

• If a large amount of metal specks are not found, replace 

the control valve body.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

No

Replace the torque converter.

1871-1U-06B(05-03).fm  14 ページ  ２００６年３月１５日　水曜日　午前１１時１９分

 

 

 

 

 

 

 

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