Mazda CX 7. Manual — part 244

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

05-02–85

05-02

DTC P2764[AW6A-EL, AW6AX-EL]

id050211805500

DTC P2764

TCC control solenoid circuit malfunction (short to ground/open circuit)

DETECTION

CONDITION

• Open or 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

• Open circuit between TCC control solenoid terminal B and TCM terminal B9

• Open circuit between TCC control solenoid terminal A and TCM terminal B4

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

• Short to ground 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

B

A

B9

B4

A

B

TCC CONTROL
SOLENOID

TCC CONTROL SOLENOID

WIRING HARNESS-SIDE CONNECTOR

3

4

5

5

3

TCM

COUPLE COMPONENT CONNECTOR

COUPLE COMPONENT

6 7

6 7

B9

B4

(+)

(-)

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

05-02–86

Diagnostic procedure

End Of Sie

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED

• Has the FREEZE FRAME DATA been

recorded?

Yes

Go to the next step.

No

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

2

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.

No

Go to the next step.

3

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.

No

Replace the couple component, then go to Step 8.

4

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 8.

No

Go to the next step.

5

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.

No

Replace the couple component, then go to Step 8.

6

INSPECT TERMINAL COUPLE COMPONENT
CIRCUIT FOR OPEN CIRCUIT

• Inspect for continuity between couple

component terminals and line pressure control
solenoid terminals (wiring harness-side).
— Terminal B9 and terminal B

— Terminal B4 and terminal A

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace the couple component, then go to Step 8.

7

INSPECT TERMINAL COUPLE COMPONENT
CIRCUIT FOR SHORT TO GROUND

• Inspect for continuity between couple

component terminals (wiring harness-side).

— Terminal B9 and all terminals except B9/B4

— Terminal B4 and all terminals except B9/B4

• Is there continuity?

Yes

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

No

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

8

VERIFY TROUBLESHOOTING OF DTC P2764
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].)

No

Go to the next step.

9

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].)

No

DTC troubleshooting completed.

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

05-02–87

05-02

PID/DATA MONITOR INSPECTION[AW6A-EL, AW6AX-EL]

id050211805600

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “DataLogger”.
3. Select “Module”.
4. Select “TCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “TCM”.
3. Select “DataLogger”.

3. Select the PID from the PID table.
4. Verify the PID data according to the directions on

the M-MDS screen.

Note

• Perform part inspection for the output device after TCM inspection.

• The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the TCM.

Therefore, if a monitored value of an output device is out of specification, it is necessary to inspect the
monitored value of the input device related to the output device control. Since an output device
malfunction is not directly indicated as a malfunction of the monitored value for the output device, it is
necessary to inspect the output device individually using the simulation function.

PID/DATA MONITOR AND RECORD function table

DLC-2

acxuuw00000480

Monitor item

(Definition)

Unit/

Condition

Condition/Specification

Action

TCM

terminal

BOO TCM
(Brake switch)

On/Off

• Brake pedal depressed: On

• Other: Off

Inspect the brake switch.
(See 04-11-9 BRAKE SWITCH
INSPECTION.)

–

DTCCNT

–

Indicates number of DTC

Check DTC.
(See 05-02-5 DTC TABLE[AW6A-EL,
AW6AX-EL].)

–

DWN SW
(Down switch)

On/Off

• Down shift at M range: On

• Other: Off

Inspect the selector lever component.
(See 05-18-6 SELECTOR LEVER
COMPONENT INSPECTION.)

A4

ECT TCM
(Engine
coolant
temperature)

°C, °F

Indicates ECT

Inspect the PCM.
(See 01-40-6 PCM INSPECTION[L3
WITH TC].)

–

FDPDTC
(FREEZE
FRAME DATA)

–

Indicates code of FREEZE FRAME
DATA

Inspect the TCM.
(See 05-17-21 TCM
INSPECTION[AW6A-EL, AW6AX-EL].)

–

GEAR_RA
(Gear ratio)

–

• 1GR: 4.148

• 2GR: 2.370

• 3GR: 1.555

• 4GR: 1.154

• 5GR: 0.859

• 6GR: 0.685

Inspect following PIDs: THOP, TSS, VSS

–

GEAR_SEL
(Calculated
gear range in
TCM)

1st/2nd/3rd/

4th/5th/6th

• 1GR: 1st

• 2GR: 2nd

• 3GR: 3rd

• 4GR: 4th

• 5GR: 5th

• 6GR: 6th

Inspect following PIDs: THOP, TSS, VSS

–

LPS
(Pressure
control
solenoid)

A

100— 1,000 mA

Inspect the pressure control solenoid.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B1, B3

MNL SW
(M range
switch)

On/Off

• M range: On

• Other: Off

Inspect the selector lever component.
(See 05-18-6 SELECTOR LEVER
COMPONENT INSPECTION.)

A7

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

05-02–88

OSS
(Output shaft
speed)

RPM

• Ignition switch ON:0 RPM

• Indicates output shaft speed

Inspect the VSS.
(See 05-17-18 VEHICLE SPEED
SENSOR (VSS) INSPECTION[AW6A-
EL, AW6AX-EL].)

B19, B20

PNP_TCM
(Park/Neutral)

Drive/

Neutral

• P, N position: Neutral

• D, M range or R position: Drive

Inspect the TR switch.
(See 05-17-21 TCM
INSPECTION[AW6A-EL, AW6AX-EL].)

–

RPM TCM
(Engine
speed)

RPM

• Ignition switch ON:0 RPM

• Idle:700— 800 RPM

Inspect the PCM.
(See 01-40-6 PCM INSPECTION[L3
WITH TC].)

–

SSA
(Shift solenoid
A)

On/Off

• M range (1GR): On

• Other: Off

Inspect the shift solenoid A.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B5

SSB
(Shift solenoid
B)

On/Off

• M range (1GR): On

• Other: Off

Inspect the shift solenoid B.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B2

SSC
(Shift solenoid
C)

A

• P, R, N position or D/M range (5GR,

6GR): solenoid on

• Other: solenoid off

— 100— 1,000 mA

Inspect the shift solenoid C.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B10, B11

SSD
(Shift solenoid
D)

A

• P, R, N position or D/M range (1GR,

2GR, 3GR): solenoid on

• Other: solenoid off

— 100— 1,000 mA

Inspect the shift solenoid D.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B17, B18

SSE
(Shift solenoid
E)

A

• R position (more than 11 km/h {4

mph}) or D/M range (1GR, 2GR,
4GR, 6GR): solenoid on

• Other: solenoid off

— 100— 1,000 mA

Inspect the shift solenoid E.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B14, B22

SSF
(Shift solenoid
F)

A

• P, R, N position or D/M range (1GR,

3GR, 4GR, 5GR): solenoid on

• Other: solenoid off

— 100— 1,000 mA

Inspect the shift solenoid F.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B16, B21

TCCC
(TCC solenoid
valve)

A

• TCC on: solenoid on

• Other: solenoid off

— 200— 1,000 mA

Inspect the TCC control solenoid.
(See 05-17-20 SOLENOID VALVE
INSPECTION[AW6A-EL, AW6AX-EL].)

B4, B9

TFT
(ATF
temperature)

°C, °F

Indicates ATF temperature

Inspect the TFT sensor.
(See 05-17-12 TRANSAXLE FLUID
TEMPERATURE (TFT) SENSOR
INSPECTION[AW6A-EL, AW6AX-EL].)

B7, B8

TFTV
(ATF
temperature
signal voltage)

V

• ATF temperature 10 °C {50

°F}:4.78— 4.81 V

• ATF temperature 25 °C {77

°F}:4.61— 4.65 V

• ATF temperature 110 °C {230

°F}:2.30— 2.45 V

Inspect the TFT sensor.
(See 05-17-12 TRANSAXLE FLUID
TEMPERATURE (TFT) SENSOR
INSPECTION[AW6A-EL, AW6AX-EL].)

B7, B8

THOP
(Throttle
position)

%

• CTP: 0%

• WOT: 100%

Inspect the PCM.
(See 01-40-6 PCM INSPECTION[L3
WITH TC].)

–

TR
(TR switch)

R/N/D/P

• R position: R

• N position: N

• D range: D

• P position: P

Inspect the TR switch.
(See 05-17-21 TCM
INSPECTION[AW6A-EL, AW6AX-EL].)

–

TRD
(TR switch [D
range])

On/Off

• D range: On

• Other ranges and all positions: Off

Inspect the TR switch.
(See 05-17-21 TCM
INSPECTION[AW6A-EL, AW6AX-EL].)

–

TRR
(TR switch [R
position])

On/Off

• R position: On

• Other positions and all ranges: Off

Inspect the TR switch.
(See 05-17-21 TCM
INSPECTION[AW6A-EL, AW6AX-EL].)

–

TSS
(Input/turbine
speed sensor)

RPM

• Ignition switch ON:0 RPM

• Idle:700— 800 RPM

Inspect the input/turbine speed sensor.
(See 05-17-15 INPUT/TURBINE SPEED
SENSOR INSPECTION[AW6A-EL,
AW6AX-EL].)

–

Monitor item

(Definition)

Unit/

Condition

Condition/Specification

Action

TCM

terminal

1871-1U-06B(05-02).fm 88 ページ ２００６年３月１５日 水曜日 午前１１時１８分