Driver's side

Measure the voltage at each terminal (except terminals K and M.)
- If the voltage is not as specified in the terminal voltage table, inspect the parts under Inspection item (s) and related wiring harnesses.
Connect the negative battery cable.
Inspect the power window main switch connector for continuity at terminals K and M.

If the system does not work normally even though the inspection items or related wiring harnesses do not have any malfunction, replace the power window main switch.

Go to TERMINAL VOLTAGE REFERENCE .

Fig 1: Identifying Power Window Main Switch Connector

Courtesy of MAZDA MOTORS CORP.

TERMINAL VOLTAGE REFERENCE

Terminal	Signal name	Connected to	Measured condition	Voltage (V)/Continuity	Inspection item (s)
A	Close output	Power window motor	While door glass is opening	1.0 or less	Power window motor
A	Close output	Power window motor	While door glass is closing	B+	Power window motor
B	Power cut	Power window subswitch	Ignition switch at ON Power cut switch at off	0.25	Related wiring harness Power window subswitch
			Ignition switch at ACC or LOCK	1.0 or lass
			Power cut switch at on	1.0 or less
C	Power supply	Power window motor	Ignition switch at ON	B+	Power window motor
E	Power supply	PAW 30 A fuse	Under any condition	B+	P/W 30 A fuse
H	Serial 1	Power window sub switch	Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. Inspect the wiring harness between power window main switch terminal H and power window subswitch terminal B for the following: Short to ground Open circuit		Power window subswitch
K	GND	Body ground	Under any condition: Inspect for continuity to ground	Continuity detected	GND
M	GND	Power window motor	Under any condition: Inspect for continuity to ground	Continuity detected	Power window motor
N	IG2	Ignition relay	Ignition switch at ON	B+	Ignition relay
N	IG2	Ignition relay	Ignition switch at ACC or LOCK	1.0 or less	Ignition relay
O	Pulse 1	Power window motor	Door glass moving	Approx. 6	Power window motor
O	Pulse 1	Power window motor	Door glass stopped	0 or B+	Power window motor
P	Pulse 2	Power window motor	Door glass moving	Approx. 6	Power window motor
P	Pulse 2	Power window motor	Door glass stopped	1.0 or less	Power window motor
Q	Open output	Power window motor	While door glass is opening	B+	Power window motor
Q	Open output	Power window motor	While door glass is closing	1.0 or less	Power window motor
R	Perial 2	Keyless control module	Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. Vehicles without advanced keyless system Inspect the wiring harness between power window main switch terminal R and keyless control module terminal 2T for the following: Short to ground Open circuit Vehicles with advanced keyless system Inspect the wiring harness between power window main switch terminal R and keyless control module terminal 2P for the following: Short to ground Open circuit		Keyless control module

Turn the ignition switch to ON position, and verify the LED illuminates.

If there is any malfunction, replace the power window main switch.