Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B2697 01: Headlamp Washer Request Circuit shorted to voltageDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Headlamp Washer Relay Control | -- | -- | -- | -- |
Headlamp Washer Relay Voltage Supply | -- | 1 | 1 | -- |
Headlamp Washer Switch Signal | 1 | 1 | -- | -- |
Headlamp Washer Relay Ground | -- | 1 | 1 | -- |
Headlamp Washer Switch Ground | -- | 1 | 1 | -- |
1. Front Headlamp washers Malfunction | ||||
Circuit/System Description
When the windshield wiper switch is in the ON position, it sends a voltage signal through a 24K ohm resistor and the windshield wiper switch signal 2 circuit to the windshield wiper/washer module indicating the wiper request. This voltage signal is also sent to the instrument panel module (IPM) indicating the wiper request. When the windshield washer switch is pressed, battery positive voltage is applied through the switch contacts by-passing the 24K ohm resistor, then through the same windshield wiper switch signal 2 circuit to the wiper/washer module and the IPM indicating the washer request. The IPM counts each washer request and on the fourth request it will activate the low side drive output that controls the headlamp washer relay.
Conditions for Running the DTC
The IPM must be awake with the ignition in the accessory, run, or crank request power modes.
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
B2697 01
The IPM detects battery positive voltage on the windshield wiper switch signal 2 circuit for 30 seconds.
Actions Taken When the DTC Sets
The IPM disables the headlamp washer function.
Conditions for Clearing the DTC
| • | A current DTC clears when the malfunction is no longer present. |
| • | A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the headlamp washer relay.
- Test for less than 1.0 ohm between the ground circuit terminal G10 and ground.
- Connect a test lamp between the headlamp washer relay control circuit terminal A7 and the ground circuit terminal C6.
- Command the headlamp washers ON and OFF with the headlamp washer switch. The test lamp should turn ON and OFF when changing between the commanded states.
- If all circuits test normal, test or replace the headlamp washer relay.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the IPM. |
| ⇒ | If the test lamp is always OFF, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the IPM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for IPM replacement, setup, and programming |
