Dtc P2138[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

DTC P2138[L3 WITH TC]

DTC P2138 APP sensor No.1/No.2 voltage correlation problem
• The PCM compares the input voltage from APP sensor No.1 with the input voltage from APP sensor No.2
when the engine is running. If the difference is more than the specification, the PCM determines that there
is an APP sensor No.1/No.2 angle correlation problem.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• APP sensor No.1 malfunction
• APP sensor No.2 malfunction
POSSIBLE
• Connector or terminal malfunction
CAUSE
• PCM malfunction
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 APP SENSOR CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch to off.
• Disconnect the APP sensor connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
4 INSPECT APP SENSOR
• Inspect the APP sensor.
(See01-40-33 ACCELERATOR PEDAL
POSITION (APP) SENSOR INSPECTION[L3
WITH TC].)
• Is there any malfunction?
5 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch to off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
6 VERIFY TROUBLESHOOTING OF DTC P2138
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the M-MDS.
• Start the engine.
• Is the same DTC present?
7 VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See01-14-4 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 the FREEZE FRAME DATA on the repair order,
then go to the next step.
Yes Perform the 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 Repair or replace the terminal, then go to Step 6.
No Go to the next step.
Yes Replace the APP sensor, then go to Step 6.
(See01-13-17 ACCELERATOR PEDAL REMOVAL/
INSTALLATION[L3 WITH TC].)
No Go to the next step.
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 inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No DTC troubleshooting completed.
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ACTION
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