The battery voltage is applied from the WINDOWS circuit breaker through CKT 42 (RED) to the accessory time delay relay. The accessory time delay relay supplies voltage through CKT 70 (PNK) to the left front power window switch under the following conditions:

When an UP switch on the left front power window switch is operated, the battery voltage is applied to the power window motor. The power window motor is grounded through the DOWN contacts of the left front power window switch to G204. The motor runs in order to drive the power window up. When a DOWN switch in the left front power window switch is operated, the battery voltage is applied to the power window motor in the opposite direction. The power window motor is grounded through the UP contacts in the left front power window switch to G204. The motor runs in order to drive the power window down.

The express down feature fully opens the left front power window automatically. This feature is activated by momentarily pressing the left front power window switch past the first detent. If the UP button is pressed while the power window is in the express mode, the power window stops. When the express mode is activated, the left front power window switch applies the voltage to the left front power window motor through CKT 165 (BRN). This action causes the motor run. When the motor reaches the full-down position, a motor stall is detected by the left front power window switch. This condition turns OFF the voltage to the motor.

The rear window lockout feature disables the rear power window switches. The rear power window motors may be operated only by the left front power window switch. This lockout is a safety feature in order to prevent children from tampering with the power windows. The rear window lockout switch supplies the battery voltage through CKT 1307 (DK BLU) to terminal F of both of the rear power window switches. When the rear window lockout switch is engaged, the voltage is removed from the rear power window switches. For commercial vehicles (RPO V4U), the wiring to C312 and C319 is also on the locked-out CKT 1307 (DK BLU).

The battery voltage is applied from the WINDOWS circuit breaker through CKT 42 (RED) to the accessory time delay relay. The accessory time delay relay supplies the voltage through CKT 70 (PNK) to the right front power window switch under the following conditions:

When the UP switch is pressed, the voltage is applied to one terminal of the power window motor through CKT 666 (DK BLU). Ground is applied to the opposite terminal of the power window motor from the left front power window switch through the right front power window switch on the following circuits:

When the DOWN switch is pressed, the voltage is applied to one terminal of the power window motor through CKT 667 (BRN). Ground is applied to the opposite terminal of the power window motor from the left front power window switch through the right front power window switch on the following circuits:

The battery voltage is supplied from the left front power window switch to the rear power window switches through CKT 1307 (DK BLU). For commercial vehicles (RPO V4U), the battery voltage is also supplied to terminal C of C312 and C319. When the UP switch is pressed, the voltage is applied to one terminal of the power window motor through the following circuits:

Ground is applied to the opposite terminal of the power window motor from the left front power window switch through the rear power window switch on either of the following locations:

When the DOWN switch is pressed, the voltage is applied to one terminal of the power window motor through either of the following circuits:

Ground is applied to the opposite terminal of the power window motor from the left front power window switch through the right front power window switch on either of the following locations:

For on-vehicle service, refer to the appropriate procedures.