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.

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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].)

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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.

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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.

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