Nissan 240sx S13 Power Windows: operation and testing

Nissan 240sx S13



A motor, mounted on window regulator, is used to raise and lower the side glass. Each motor has an internal circuit breaker. An in-line circuit breaker protects all power window circuits. Each power window switch has an amplifier.

OPERATION

Pushing power window switch in one direction will raise or lower side glass. When switch is pushed in opposite direction, current to motor is reversed and motor changes direction. Driver's power window (main) switch can operate any window.

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TESTING

AMPLIFIER (DRIVER'S POWER WINDOW SWITCH)

Check power source and ground continuity as indicated in test charts. Check input and output signals. See Fig. 1. Replace driver's power window switch/amplifier as necessary.

Fig. 1: Testing Driver's Power Window Switch Amplifier (240SX)

MOTOR TEST

Apply battery voltage between motor connector terminals. Window should move up or down. Reverse battery leads. Window should move in other direction. If window moves up and down, motor is okay. If window does not move as described, replace motor.

SWITCH TEST

Remove connector from switch. Test continuity of switch. See Fig. 2.

Fig. 2: Testing Door Switches (240SX)



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Nissan 240sx S13

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