NO.27 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [MZR-CD (RF Turbo)]

id0103f1822500

27

A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS
DESCRIPTION
•  A/C compressor magnetic clutch does not disengage under a wide open throttle.
POSSIBLE CAUSE
•  Accelerator pedal position (APP) sensor malfunction
•  Loosely installed APP sensor

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
Does the A/C compressor disengage when the A/C switch is turned off?
Yes
Go to the next step.
No
Go to symptom troubleshooting “NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZR-CD (RF-Turbo)]”.
(See NO.26 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZR-CD (RF Turbo)].)
2
Perform the self-test function using the M-MDS.
Turn the engine switch to the ON position.
Retrieve any DTCs.
Are any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC test.
(See DTC TABLE [MZR-CD (RF Turbo)].)
Communication error message is displayed:
Inspect the following:
•  Open circuit between PCM control relay and PCM terminal 119 or 120
•  Open circuit PCM control relay and PCM terminal 105
•  PCM control relay stuck open.
•  Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117)
•  Poor connection to vehicle body ground
No
No DTC is displayed:
Inspect APP sensor.
(See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR-CD (RF Turbo)].)
3
Verify test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
―  If the vehicle is repaired, troubleshooting completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.