B230E

B230E - Rear Wiper Park Switch Input Circuit High Stuck High






For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON.

• Set Condition: The totally integrated power module does not detect a change from high to low voltage on the rear wiper park switch sense circuit.






Test Step 1 - Intermittent Condition

• Turn the ignition ON.

• With the scan tool, clear all DTCs.

• Cycle the wiper switch ON and OFF 3 times.

• With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

• Go to Test Step 2.

No

• The condition that caused this symptom is currently not present. Test for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Wiper Park Switch Sense Circuit Short to Voltage







• Turn the ignition OFF.

• Disconnect the rear wiper motor harness connector.

• Turn the ignition ON.

• Using a 12 volt test lamp connected to ground, probe the rear wiper park switch sense circuit.

Does the test lamp illuminate brightly?

Yes

• Repair the circuit for a short to voltage.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 3.

Test Step 3 - Test the Rear Wiper Motor







• Connect a jumper wire between the rear wiper park switch sense circuit and ground.

• With the scan tool, read the rear wiper park switch sense.

Does the rear wiper park switch sense display True?

Yes

• Replace the rear wiper motor.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 4.

Test Step 4 - Rear Wiper Park Switch Sense Circuit Open

• Turn the ignition OFF.

• Disconnect the TIPM harness connector.

• Measure the resistance of the rear wiper park switch sense circuit between the rear wiper motor harness connector and the TIPM harness connector.

Is the resistance less than 10.0 ohms?

Yes

• Replace the totally integrated power module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Repair the circuit for an open.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior