Mazda CX-7 2007 Workshop Manual page 904

ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]
DTC P0712 Transaxle fluid temperature (TFT) sensor circuit malfunction (short to ground)
COUPLE COMPONENT
TFT
4
SENSOR
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has the FREEZE FRAME DATA been
recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related Service Bulletins and/or on-line
repair information availability.
• Is any related repair information available?
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?
4 INSPECT RESISTANCE OF TFT SENSOR
CIRCUIT
• Inspect for resistance between couple
component terminals B8 and B7 (wiring
harness-side).
• Is resistance as shown below?
— ATF temperature 10°C {50°F}: 5.62— 7.31
kilohms
— ATF temperature 25°C {77°F}: 3.5 kilohms
— ATF temperature 110°C {230°F}: 0.22—
0.27 kilohms
(See 05-17-12 TRANSAXLE FLUID
TEMPERATURE (TFT) SENSOR
INSPECTION[AW6A-EL, AW6AX-EL].)
5 VERIFY TROUBLESHOOTING OF DTC P0712
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?
05-02–16
B8
B7
INSPECTION
TCM
COUPLE COMPONENT CONNECTOR
(+)
(-)
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order,
then go to the next step.
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.
Yes Go to the next step.
No Replace the couple component, then go to Step 5.
Yes Go to the next step.
No Replace the TFT sensor, then go to the next step.
(See 05-17-13 TRANSAXLE FLUID TEMPERATURE
(TFT) SENSOR REMOVAL/INSTALLATION[AW6A-EL,
AW6AX-EL].)
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.
B8
B7
ACTION