B1590
DTC B1590
CIRCUIT DESCRIPTION
The horizontal and vertical mirror position sensors are potentiometers powered by the door modules. Both the driver door module (DDM) and passenger front door module (PDM) determine the horizontal and vertical positions of their respective mirror based on the signal voltages received from the mirror position sensors. For more detailed information concerning power mirror operation refer to Outside Mirror Description and Operation.
DTC DESCRIPTORS
This diagnostic procedure supports the following DTCs:
- DTC B1580 Mirror Horizontal Position Sensor Circuit
- DTC B1590 Mirror Vertical Position Sensor Circuit
This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.
CONDITIONS FOR RUNNING THE DTC
- The DDM and the PDM must be powered.
- DTC B1325 Battery Voltage Out of Range, must not be current.
CONDITIONS FOR SETTING THE DTC
These DTCs will set if:
- A mirror position sensor signal voltage is below 0.25 volt for 2 seconds.
- A mirror position sensor signal voltage is above 4.75 volts for 2 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The door module will ignore the failed position sensor.
- The door module will ignore memory set or recall for the mirrors.
- Manual mirror movements will be allowed.
CONDITIONS FOR CLEARING THE DTC
- The condition responsible for setting the DTC no longer exists.
- You issue a scan tool CLEAR DTCs command.
- A history DTC will clear once 40 consecutive malfunction free ignition cycles have occurred.
DIAGNOSTIC AIDS
If the Personalization Option is activated on a vehicle that does not have Memory Mirrors, DTCs B1580 and B1590 will set in error. If these DTCs are set on a vehicle that does not have the Memory Mirrors option, refer to Body Control Module (BCM) Programming/RPO Configuration (IPM) Body Control Module (BCM) Programming/RPO Configuration (RIM) in Computer/Integrating Systems to deactivate the option.
Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Diagnostic Aids for Circuit Testing and Wiring Repair Procedures. Component Tests and General Diagnostics
TEST
