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Mazda CX 7. Manual - part 243

ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]

05-02–81

05-02

End Of Sie

INSPECT ATF CONDITION

• Turn the ignition switch to the LOCK position.

• Inspect the ATF condition.

— Clear red: Normal

— Light red (pink): Water mixed in fluid

— Reddish brown: Deteriorated ATF

• Is it normal?

(See 05-17-10 AUTOMATIC TRANSAXLE
FLUID (ATF) INSPECTION[AW6A-EL,
AW6AX-EL].)

Yes

Go to the next step.

If the ATF color is milky or reddish brown, replace ATF, then
go to Step 7.
(See 05-17-11 AUTOMATIC TRANSAXLE FLUID (ATF)
REPLACEMENT[AW6A-EL, AW6AX-EL].)

INSPECT ATF LEVEL

• Start the engine.

• Warm up the ATX.

• Is the ATF level within the specification?

(See 05-17-10 AUTOMATIC TRANSAXLE
FLUID (ATF) INSPECTION[AW6A-EL,
AW6AX-EL].)

Yes

Go to the next step.

Add ATF to the specified level, then go to Step 7.
(See 05-17-10 AUTOMATIC TRANSAXLE FLUID (ATF)
INSPECTION[AW6A-EL, AW6AX-EL].)

INSPECT LINE PRESSURE

• Start the engine.

• Measure the line pressures.

(See 05-17-3 MECHANICAL SYSTEM
TEST[AW6A-EL, AW6AX-EL].)

• Are the line pressures within the

specifications?

Yes

Go to the next step.

All ranges: Replace the oil pump, then go to Step 7.
Any ranges: Replace the control valve body, then go to
Step 6.
(See 05-17-38 CONTROL VALVE BODY REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

INSPECT TCC CONTROL SOLENOID

• Inspect the TCC control solenoid.

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

• Is it normal?

Yes

Replace the Torque converter, then go to the next step.
(See 05-17-46 TORQUE CONVERTER REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

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

VERIFY TROUBLESHOOTING OF DTC P2758
COMPLETED

• Make sure to reconnect all the disconnected

connectors.

• Clear the DTC from the memory using the M-

MDS.

• Start the engine.

• Warm up engine and ATX.

• Drive the vehicle under the following conditions

for 2 s or more.
— ATF temperature (TFT PID):20

°C {68 °F} or

more

— Engine speed: less than 3,000 rpm

— Drive in the D range, 4GR— 6GR (TCC no

operation)

• Are any DTCs present?

Yes

Replace the TCM, then go to the next step.
(See 05-17-25 TCM REMOVAL/INSTALLATION[AW6A-EL,
AW6AX-EL].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

(See 05-02-4 AFTER REPAIR
PROCEDURE[AW6A-EL, AW6AX-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
(See 05-02-5 DTC TABLE[AW6A-EL, AW6AX-EL].)

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]

05-02–82

DTC P2762[AW6A-EL, AW6AX-EL]

id050211805300

Diagnostic procedure

DTC P2762

TCC control solenoid range/performance (stuck)

DETECTION

CONDITION

• Feedback current corresponding to solenoid current command value is irregular when engine is running.

Diagnostic support note:

• This is a continuous monitor (CCM).

• The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

• A PENDING CODE is not available.

• FREEZE FRAME DATA is available.

• The AT warning light illuminates.

• The DTC is stored in the TCM memory.

POSSIBLE

CAUSE

• ATF level low

• Deteriorated ATF

• TCC control solenoid stuck

• Control valve stuck

• TCM malfunction

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED

• Has the FREEZE FRAME DATA been

recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA on the repair order,
then go to the next step.

VERIFY RELATED REPAIR INFORMATION
AVAILABILITY

• Verify related Service Bulletins and/or on-line

repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available
repair information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT ATF CONDITION

• Turn the ignition switch to the LOCK position.

• Inspect the ATF condition.

— Clear red: Normal

— Light red (pink): Water mixed in fluid

— Reddish brown: Deteriorated ATF

• Is it normal?

(See 05-17-10 AUTOMATIC TRANSAXLE
FLUID (ATF) INSPECTION[AW6A-EL,
AW6AX-EL].)

Yes

Go to the next step.

If the ATF color is light red or reddish brown, replace ATF,
then go to Step 7.
(See 05-17-11 AUTOMATIC TRANSAXLE FLUID (ATF)
REPLACEMENT[AW6A-EL, AW6AX-EL].)

INSPECT ATF LEVEL

• Start the engine.

• Warm up the ATX.

• Is the ATF level within the specification?

(See 05-17-10 AUTOMATIC TRANSAXLE
FLUID (ATF) INSPECTION[AW6A-EL,
AW6AX-EL].)

Yes

Go to the next step.

Add ATF to the specified level, then go to Step 7.
(See 05-17-10 AUTOMATIC TRANSAXLE FLUID (ATF)
INSPECTION[AW6A-EL, AW6AX-EL].)

INSPECT LINE PRESSURE

• Start the engine.

• Measure the line pressures.

(See 05-17-3 MECHANICAL SYSTEM
TEST[AW6A-EL, AW6AX-EL].)

• Are the line pressures within the

specifications?

Yes

Go to the next step.

• All ranges: Replace the oil pump or control valve body,

then go to the next step.

• Any ranges: Replace the ATX, then go the next step.

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

INSPECT TCC CONTROL SOLENOID

• Inspect the TCC control solenoid.

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

• Is it normal?

Yes

Go to the next step.

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

VERIFY TROUBLESHOOTING OF DTC P2762
COMPLETED

• Make sure to reconnect all the disconnected

connectors.

• Clear the DTC from the memory using the M-

MDS.

• Drive the vehicle in D range and make sure

that gears shift smoothly from 1GR to 6GR.

• Is same DTC present?

Yes

Replace the TCM, then go to the next step.
(See 05-17-25 TCM REMOVAL/INSTALLATION[AW6A-EL,
AW6AX-EL].)

Go to the next step.

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ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]

05-02–83

05-02

End Of Sie

DTC P2763[AW6A-EL, AW6AX-EL]

id050211805400

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

(See 05-02-4 AFTER REPAIR
PROCEDURE[AW6A-EL, AW6AX-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
(See 05-02-5 DTC TABLE[AW6A-EL, AW6AX-EL].)

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

DTC P2763

TCC control solenoid circuit malfunction (short to power)

DETECTION

CONDITION

• Short circuit in TCC control solenoid signal system (while TCM monitors solenoid output voltage, the

voltage that differs from the signal output by CPU in TCM is detected).

Diagnostic support note:

• This is a continuous monitor (CCM).

• The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

• A PENDING CODE is not available.

• FREEZE FRAME DATA is available.

• The AT warning light illuminates.

• The DTC is stored in the TCM memory.

POSSIBLE

CAUSE

• Short to power in wiring harness between TCC control solenoid terminal B and TCM terminal B9

• Short to power in wiring harness between TCC control solenoid terminal A and TCM terminal B4

• TCC control solenoid malfunction

• Damaged connector between line pressure control solenoid and TCM

• TCM malfunction

TCC CONTROL
SOLENOID

TCC CONTROL SOLENOID

WIRING HARNESS-SIDE CONNECTOR

TCM

COUPLE COMPONENT CONNECTOR

COUPLE COMPONENT

(+)

(-)

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ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]

05-02–84

Diagnostic procedure

End Of Sie

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED

• Has the FREEZE FRAME DATA been

recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA on the repair order,
then go to the next step.

VERIFY RELATED REPAIR INFORMATION
AVAILABILITY

• Verify related Service Bulletins and/or on-line

repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available
repair information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT TERMINAL COUPLE COMPONENT
FOR POOR CONNECTION

• Turn the ignition switch to the LOCK position.

• Remove the TCM.

(See 05-17-25 TCM REMOVAL/
INSTALLATION[AW6A-EL, AW6AX-EL].)

• Inspect for poor connection (such as damaged/

pulled-out pins, corrosion).

• Are terminals normal?

Yes

Go to the next step.

Replace the couple component, then go to Step 7.

INSPECT RESISTANCE OF TCC CONTROL
SOLENOID CIRCUIT

• Inspect for resistance between couple

component terminals B9 and B4 (wiring
harness-side).

• Is resistance within 5.0— 5.6 ohms?

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

Yes

Go to go to Step 7.

Go to the next step.

INSPECT TERMINAL TCC CONTROL
SOLENOID FOR POOR CONNECTION

• Disconnect the TCC control solenoid

connector.

• Inspect for poor connection (such as damaged/

pulled-out pins, corrosion).

• Are terminals normal?

Yes

Go to the next step.

Replace the couple component, then go to Step 7.

INSPECT TERMINAL COUPLE COMPONENT
CIRCUIT FOR SHORT TO POWER

• Inspect for continuity between couple

component terminals (wiring harness-side).

— Terminal B21 and all terminals except B21/

B16

— Terminal B16 and all terminals except B21/

B16

• Is there continuity?

Yes

Repair or replace the couple component, then go to the
next step.

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

VERIFY TROUBLESHOOTING OF DTC P2763
COMPLETED

• Make sure to reconnect all the disconnected

connectors.

• Clear the DTC from the memory using the M-

MDS.

• Drive the vehicle in D range and make sure

that gears shift smoothly from 1GR to 6GR.

• Is same DTC present?

Yes

Replace the TCM, then go to the next step.
(See 05-17-25 TCM REMOVAL/INSTALLATION[AW6A-EL,
AW6AX-EL].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

(See 05-02-4 AFTER REPAIR
PROCEDURE[AW6A-EL, AW6AX-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
(See 05-02-5 DTC TABLE[AW6A-EL, AW6AX-EL].)

DTC troubleshooting completed.

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