FREQUENT SHIFTING [FW6A-EL]

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2014 - Mazda6 - Transmission/Transaxle


TROUBLESHOOTING ITEM	Frequent shifting
DESCRIPTION	Downshifting occurs suddenly even when accelerator pedal is depressed slightly in D position.
POSSIBLE CAUSE	Signal malfunction APP sensor malfunction Low-G (XY) sensor (built into SAS control module) malfunction

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

Related PCM PIDs


Item (definition)	Unit/Condition	Definition	Condition/Specification (Reference)
APP	%	Accelerator pedal position	Accelerator pedal released: Approx. 0% Accelerator pedal depressed: Approx. 100%

Item (definition)

Unit/Condition

Definition

Condition/Specification (Reference)

APP

Accelerator pedal position

Accelerator pedal released: Approx. 0%

Accelerator pedal depressed: Approx. 100%

Diagnostic procedure


STEP	INSPECTION		ACTION
1	INSPECT SIGNAL PARTS FOR MALFUNCTION Inspect the value at the following PCM PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].) APP (APP sensor) Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result.
1		No	Go to the next step.
2	VERIFY IF MALFUNCTION CAUSE LOW-G (XY) SENSOR Is there any malfunction?	Yes	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
2		No	Symptom troubleshooting is completed.

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