Mazda CX-7 2007 Workshop Manual page 115

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA AND
DIAGNOSTIC MONITORING TEST RESULTS
HAVE BEEN RECORDED
• Have the FREEZE FRAME DATA and
DIAGNOSTIC MONITORING TEST RESULTS
(Engine cooling system related) been
recorded?
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
3 VERIFY CURRENT INPUT SIGNAL STATUS: IS
CONCERN INTERMITTENT OR CONSTANT
• Start the engine.
• Warm up the engine completely.
• Access the ECT PID using the M-MDS.
• Is the ECT PID above 60 °C {140 °F}?
4 INSPECT ECT SENSOR CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the ECT sensor connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion.)
• Is there any malfunction?
5 INSPECT ECT SENSOR
• Inspect the ECT sensor.
(See01-40-25 ENGINE COOLANT
TEMPERATURE (ECT) SENSOR
INSPECTION[L3 WITH TC].)
• Is it normal?
6 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion.)
• Is there any malfunction?
7 VERIFY TROUBLESHOOTING OF DTC P0125
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the M-MDS.
• Turn the ignition switch to the ON position
(Engine off).
• Access the ECT PID using the M-MDS.
• Wait until ECT PID below 8 °C {46 °F}.
• Start the engine and warm it up completely.
• Is the PENDING CODE for this DTC present?
8 VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Go to the next step.
No Record FREEZE FRAME DATA and DIAGNOSTIC
MONITORING TEST RESULTS on the repair order, then
go to the next step.
Yes Perform the repair or diagnosis according to available
Service Information.
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Intermittent concern exists. Go to the INTERMITTENT
CONCERNS TROUBLESHOOTING procedure.
(See01-03-76 INTERMITTENT CONCERN
TROUBLESHOOTING[L3 WITH TC].)
No Go to the next step.
Yes Repair or replace the terminal, then go to Step 7.
No Go to the next step.
Yes Go to the next step.
No Replace the ECT sensor, then go to Step 7.
Yes Repair or replace the terminal, then go to the next step.
No Go to the next step.
Yes Replace the PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No Go to the next step.
Yes Go to the applicable DTC troubleshooting.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Troubleshooting completed.
ACTION
01-02–73
01-02