2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 467

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 467

Circuit/System Description

The Driver Door Module (DDM) and Passenger Door Module (PDM) determine the position of the outside rearview mirrors based on inputs from

two mirror position sensors, one for vertical position, the other for horizontal position. Five volts is applied to each sensor through a shared 5-volt

reference circuit and a shared low reference circuit supplies ground. Each sensor has an individual signal circuit which provides position voltage to

the DDM/PDM.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

B1580

An improper voltage level is seen on the Driver/Passenger Mirror Horizontal Position Sensor Signal circuit.

B1590

An improper voltage level is seen on the Driver/Passenger Mirror Vertical Position Sensor Signal circuit.

Action Taken When the DTC Sets

Memory mirror recall functions are suspended as long as the fault is present.

Conditions for Clearing the DTC

* A current DTC will clear when the fault is no longer present.

* A history DTC will clear after 40 fault free ignition cycles.

Reference Information

Schematic Reference

Outside Rearview Mirror Schematics (See: Body and Frame/Mirrors/Diagrams/Electrical Diagrams/Outside Rearview Mirror Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Outside Mirror Description and Operation (Heated Mirrors) (See: Body and Frame/Mirrors/Description and Operation/Outside Mirror Description

and Operation (Heated Mirrors))Outside Mirror Description and Operation (Power Mirrors) (See: Body and Frame/Mirrors/Description and

Operation/Outside Mirror Description and Operation (Power Mirrors))

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool References

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.

Circuit/System Verification

Ignition ON, observe the scan tool Mirror Horizontal Position and Mirror Vertical Position parameters. The reading should be between 0.2-4.8 volts