For 1990-2009 cars only
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 Descriptor
DTC B370A 00: Rain Sensor MaifunctionCircuit/System Description
The rain sensor module has internal logic that monitors it's communication with the underhood electrical center (UEC). If the the rain sensor can not communicate with the UEC a code B370A is set.
Conditions for Running the DTC
| • | The system voltage is 9-18 volts. |
| • | Ignition on. |
Conditions for Setting the DTC
Rain sensor is activated and has communication failure with UEC.
Action Taken When the DTC Sets
Auto Rain senceing wipers are disabled, wipers work normally in all manual modes.
Conditions for Clearing the DTC
| • | The DTC will be current for as long as the fault is present. |
| • | When the fault is no longer present, the DTC will be a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Wiper/Washer System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Clear all DTCs and operate the wipers in Conditions for Running the DTC. The DTC should not set.
| ⇒ | If the DTC sets, replace the rain sensor. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
