GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 XLR 🢒 Body 🢒 Wipers/Washer Systems 🢒 Wipers Always On

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: Windshield wipers are always ON.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2
  1. Turn the windshield wiper/washer switch OFF.
  2. Turn ON the ignition.

Are the windshield wipers always ON?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

Are the windshield wipers always ON in high speed?

Go to Step 4

Go to Step 9

4
  1. Turn OFF the ignition.
  2. Disconnect the wiper HI/LO relay.
  3. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 5

Go to Step 6

5
  1. Turn OFF the ignition.
  2. Disconnect the windshield wiper motor.
  3. Turn ON the ignition, with the engine OFF.
  4. Test the windshield wiper motor high speed control circuit for a short to B+. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 16

6
  1. Reconnect the wiper HI/LO relay.
  2. Disconnect the windshield wiper/washer switch.
  3. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 7

Go to Step 18

7
  1. Turn OFF the ignition.
  2. Disconnect the outside moisture sensor.
  3. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 8

Go to Step 21

8
  1. Turn OFF the ignition.
  2. Repair the wiper HI/LO relay control circuit for a short to ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 24

--

9
  1. Turn OFF the ignition.
  2. Disconnect the wiper ON/OFF relay.
  3. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 10

Go to Step 11

10
  1. Turn OFF the ignition.
  2. Disconnect the windshield wiper motor.
  3. Turn ON the ignition, with the engine OFF.
  4. Test the windshield wiper motor low speed control circuit for a short to B+. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 16

11
  1. Turn OFF the ignition.
  2. Reconnect the wiper ON/OFF relay.
  3. Disconnect the windshield wiper/washer switch.
  4. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 13

Go to Step 12

12
  1. Turn OFF the ignition.
  2. Disconnect the outside moisture sensor.
  3. Test the windshield wiper switch low signal circuit for a short to ground or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 18

13
  1. Turn OFF the ignition.
  2. Disconnect the outside moisture sensor.
  3. Turn ON the ignition, with the engine OFF.

Are the windshield wipers always ON?

Go to Step 14

Go to Step 21

14
  1. Turn OFF the ignition.
  2. Disconnect the connector 1 of the BCM.
  3. Disconnect the windshield wiper switch signal 2 circuit from the BCM.
  4. Reconnect the connector 1 of the BCM.
  5. Turn ON the ignition, with the engine OFF.

Is the windshield washer pump always ON?

Go to Step 15

Go to Step 22

15
  1. Turn OFF the ignition.
  2. Repair the windshield wiper motor low speed control circuit for a short to ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 24

--

16

Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 17

17

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement

Is the repair complete?

Go to Step 24

--

18

Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 20

19

Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement .

Is the repair complete?

Go to Step 24

--

20

Inspect for poor connections at the outside moisture sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 21

21

Replace the outside moisture sensor. Refer to Windshield Outside Moisture Sensor Replacement .

Did you complete the replacement?

Go to Step 24

--

22

Inspect for poor connections at the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 23

23

Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 24

--

24
  1. Reconnect all previous disconnected circuits or connectors.
  2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3