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FREQUENT SHIFTING [EV6A-EL, EV6AX-EL]

Home  id0503n9101300

Troubleshooting item	Frequent shifting
Description	•  Downshifting occurs suddenly even when accelerator pedal is depressed slightly in D position.
Possible cause	1.  Signal malfunction ―  APP sensor malfunction 2.  Low-G (XY) sensor (built into sophisticated airbag sensor (SAS) control module) malfunction
System wiring diagram	•  Not applicable
Connector diagram	•  Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT SIGNAL PARTS FOR MALFUNCTION •  Inspect the value at the following PCM PID using the M-MDS. (See PID/DATA MONITOR INSPECTION.) ―  APP1 (APP sensor No.1) ―  APP2 (APP sensor No.2) •  Is there any malfunction? (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-G (E))].)	Yes	Repair or replace any malfunctioning parts according to the inspection result.
		No	Go to the next step.
2	VERIFY IF MALFUNCTION CAUSE LOW-G (XY) SENSOR •  Is there any malfunction?	Yes	Replace the sophisticated airbag sensor (SAS) control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
		No	Symptom troubleshooting is completed.