Wiper and Wiper Arm System Operation

OPERATION
The wiper system operates only when the ignition switch is On or in the Accessory position. The wiper motor has permanent magnet fields, and high and low speeds are determined by current flow to the appropriate set of brushes.

The intermittent wiper system in addition to HI and Low speeds, has a delay mode. The delay mode uses a variable resistor in the wiper switch and two relays. One relay turns the wipers On/Off and the other changes the speed.

The wiper system completes wipe cycle when the switch is turned Off and the blades park in lowest portion of wipe pattern.

CIRCUIT OPERATION
Low-speed (and High-speed) Wiper
- When the wiper switch is placed in the LO position with the ignition switch in the ACC or ON position, wipers operate continuously at low speed.
- Placing the wiper switch in the HI position causes the wipers to operate at high speed.

Intermittent Wiper
- If the wiper switch is turned to the INT position when the ignition switch is in the ON or ACC position, the voltage value from the intermittent variable volume switch is input to intermittent time detection circuit.
- The intermittent time detection circuit outputs an H signal at the intermittent time according to the set value of the intermittent variable volume switch and, via OR, turns the Tr on and off to operate the wiper.

Auto Wiper Stop
- When the wiper switch is placed in the OFF position, the cam contacts of wiper motor causes current to flow through the auto wiper stop circuit, allowing the wiper blades to cycle before they reach to the stop position.

Mist Wiper
- If the washer switch is on for 0.6 Second or less when the ignition switch is at ON or ACC with the wiper switch turned off, the washer liquid will not be poured but transistor will be turned on to operate the wipers one time.

Wiper Linked With Washer
- If the washer switch is on for 0.6 Second or more when the ignition switch is at ON or ACC with the wiper switch turned off, the washer liquid will be poured and the transistor will be turned on 0.6 Second later to operate the wipers two or three times.