2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 478

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 478

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, using the folding mirror switch, the left and right rearview mirrors should extend and retract as commanded.

Circuit/System Testing

1. Ignition OFF, disconnect the X7 harness connector at the appropriate door module.

2. Ignition ON, verify a test lamp does not illuminate between the following circuit terminals and ground:

* Control circuit terminal 1

* Control circuit terminal 2

瀚慖f the test lamp illuminates, test the appropriate circuit for a short to voltage.

3. Ignition OFF, test for infinite resistance between the following circuits and ground:

* Control circuit terminal 1

* Control circuit terminal 2

瀚慖f less than the specified value, test the appropriate circuit for a short to ground. If the circuits test normal, test or replace the rearview

mirror.

4. Test for 5-15 ohms between the control circuit terminal 1 and the control circuit terminal 2.

瀚慖f not within the specified range, test both control circuits for an open/high resistance. If the circuits test normal, test or replace the

rearview mirror.

5. If all circuits test normal, replace the appropriate door module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Outside Rearview Mirror Motor Replacement (See: Body and Frame/Mirrors/Power Mirror Motor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for DDM or PDM replacement, setup, and

programming

B1735

DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B1735 01

- Seat Front Up Switch Circuit Short to Battery

DTC B1740 01

- Seat Front Down Switch Circuit Short to Battery