Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1996CARAVAN L4-2.4L DOHCREPAIR AND DIAGNOSISWIPER AND WASHER SYSTEMSDESCRIPTION AND OPERATIONREAR (LIFTGATE) WIPER CIRCUIT OPERATION
1996 Dodge and Ram Caravan L4-2.4L DOHC
Rear (Liftgate) Wiper Circuit Operation
1996 Dodge and Ram Caravan L4-2.4L DOHCSECTION Rear (Liftgate) Wiper Circuit Operation
CIRCUIT OPERATION
The rear wiper system in this vehicle uses three switches located in the HVAC control. The operator selects the desired mode of operation from one of the three switches. The HVAC control converts the operators request to a varying analog signal that is sent to the Body Control Module (BCM) on the V26 circuit.
Each of the switches used in this system use a Light Emitting Diode (LED) to indicate to the operator what mode the system is in. Power for the LED's is supplied from the HVAC control. Ground for the LED's is supplied on circuit Z2 and terminates at the instrument panel ground.
This system is also vehicle speed sensitive.
Power for the rear wiper motor is supplied from the BCM on circuit V13. The V23 circuit is connected from the BCM to the motor and used for measuring the dwell of the motor.
Ground for the wiper motor is supplied on circuit Z1 and terminates at the liftgate ground.
When the rear washer motor is activated, the BCM provides a ground path for the V20 circuit. This circuit connects from the pump motor to the BCM.
Power for the washer motor is supplied on circuit F1. This circuit is protected by a 6 Amp Positive Temperature Coefficient (PTC) in location 9 of the junction block.
The rear wiper system in this vehicle uses three switches located in the HVAC control. The operator selects the desired mode of operation from one of the three switches. The HVAC control converts the operators request to a varying analog signal that is sent to the Body Control Module (BCM) on the V26 circuit.
Each of the switches used in this system use a Light Emitting Diode (LED) to indicate to the operator what mode the system is in. Power for the LED's is supplied from the HVAC control. Ground for the LED's is supplied on circuit Z2 and terminates at the instrument panel ground.
This system is also vehicle speed sensitive.
Power for the rear wiper motor is supplied from the BCM on circuit V13. The V23 circuit is connected from the BCM to the motor and used for measuring the dwell of the motor.
Ground for the wiper motor is supplied on circuit Z1 and terminates at the liftgate ground.
When the rear washer motor is activated, the BCM provides a ground path for the V20 circuit. This circuit connects from the pump motor to the BCM.
Power for the washer motor is supplied on circuit F1. This circuit is protected by a 6 Amp Positive Temperature Coefficient (PTC) in location 9 of the junction block.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.