Question about 1995 Dodge Caravan
Checked fuses and they are good
Wiper motor might need to be replaced try that that should solve issue
Posted on Nov 22, 2014
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Posted on Jan 02, 2017
SOURCE: 2000 Caravan 3.0L. No odometer
The common cause of this problem is the Park Neutral switch, also called the range switch, it is on the side of the transmission.It mounts externally on the transmission on the front or
driver's side of the transmission. Most have a three wire connector that
plugs in to it and you can take them out with a socket or large wrench.
The PCM on this vehicle uses inputs from 3 different switches/ sensor for this: (1) Transmission range switch, located on the outside of the transmission, just above the transmission pan, white in color (2) Park/ Neutral position switch , also located on the outside of the transmission case, above the pan, near the transmission range switch; black in color (3) Transmission range switch/ sensor, located inside of the transmission. --------- This will help.Thanks.helpmech.
Also the instrument cluster needs to be inspected.---------The soldering on the instrument cluster board gets short and causes this problems.------- Also the HVAC control,connectors on the cluster board needs to be inspected.-----
The PCM on this vehicle uses inputs from 3 different switches/ sensor for this:
(1) Transmission range switch, located on the outside of the transmission, just above the transmission pan, white in color
(2) Park/ Neutral position switch , also located on the outside of the transmission case, above the pan, near the transmission range switch; black in color
(3) Transmission range switch/ sensor, located inside of the transmission.
This will help.Thanks.helpmech.
Posted on Aug 06, 2011
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Body control module (BCM)
Wiper PCB relay
Wiper high PCB relay
Windshield wiper motor
Windshield washer fluid pump
Windshield washer fluid level switch
WPR fuse 25 A
WSW fuse 10 A
Low Speed Operation
When the wiper switch is in the low speed position, ground is applied through the switch internal resistor and the wiper switch low signal circuit to the body control module (BCM). In response to this signal, the BCM energizes the WIPER PCB relay by applying battery voltage through the wiper relay control circuit to the coil side of the relay. This allows battery positive voltage from the WPR fuse to flow through the switch input side of the WIPER PCB relay and out to the switch input side of the WIPER HIGH PCB relay. Since the wiper high relay is de-energized and its switch contacts are normally closed to the low speed control circuit of the windshield wiper motor, the motor will operate at low speed.
High Speed Operation When the wiper switch is in the high speed position, ground is applied through the windshield wiper switch high signal circuit to the body control module (BCM) indicating the wiper high speed request. In response to this signal, the BCM then energizes the wiper PCB relay, as stated above, and the wiper high PCB relay by applying ground through the control circuit to the coil side of the relay. With the wiper high relay energized and its switch contacts closed to the high speed control circuit of the wiper motor, the motor will operate at high speed.
Wiper motor high speed operation and the wiper high speed PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
You could Have a switch problem , BCM problem ,PCB relay problem , the pcb relays are non serviceable an the whole under hood fuse box would need to be replaced . Malfunctioning motor bad ground some where etc.....
Dec 20, 2015 | 2008 Chevrolet Impala
Body control module (BCM)
Wiper 1 relay
Wiper 2 relay
Windshield wiper motor
Windshield washer pump
Windshield washer nozzles
Windshield washer solvent container
Windshield wiper arm and blade assemblies
Windshield wiper transmission
WIPER/SW 10A fuse
WIPER 25A fuse
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation. The windshield wiper motor park operation is controlled by the BCM. The BCM recieves an input from the park switch to determine wiper blade position. When the wiper blades are at the bottom of the windshield glass in park position the wiper park switch will open and the circuit will be pulled up to B+ by the BCM. The park signal will be pulled to ground by the wiper motor park switch while the wiper blades are not in the park position.
The BCM controls the windshield wiper motor through two output controls, controlling two relays which determine the desired wiper speed, high or low
Diagnostic Trouble Codes (DTCs)
The body control module (BCM) monitors the voltage on the windshield wiper switch signal 2 circuit for diagnostic purposes. If the circuit is shorted to voltage while the driver is commanded OFF, the BCM will store DTC B3715. If the circuit is shorted to ground while the driver is commanded ON, the BCM will store DTC B3715. Refer to DTC B3715.
It would be best to have a factory scan tool to diagnose this problem . it would make it easier anyway .
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