2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 485
2. Ignition ON, verify a test lamp does not illuminate between the control circuit terminal 7 and ground.
瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.
3. Ignition OFF, test for infinite resistance between the control circuit terminal 7 and ground.
瀚慖f less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, test or replace the applicable
rearview mirror face.
4. Test for 5-10 ohms of resistance between the control circuit terminal 7 and the low reference circuit terminal 3.
瀚慖f not within the specified range, test the control circuit and the low reference circuit for an open/high resistance. If the circuits test
normal, test or replace the appropriate rearview mirror face.
5. If all circuits test normal, test or replace the door module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Outside Rearview Mirror Glass Replacement (See: Body and Frame/Mirrors/Service and Repair/Outside Rearview Mirror Glass
Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for DDM or PDM replacement, setup and
programming
B1722
DTC B1722
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 B1722 01
- Mirror Power Fold Circuit Short to Battery
DTC B1722 02
- Mirror Power Fold Circuit Short to Ground
DTC B1722 04
- Mirror Power Fold Circuit Open
Diagnostic Fault Information
Circuit/System Description
The Driver Door Module (DDM) and Passenger Door Module (PDM) control the power folding or power extending functions of the outside
rearview mirrors. The folding mirror motors are controlled by using bi-directional motor controls through the folding mirror motor retract control
circuit and the folding mirror motor extend control circuit.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
An improper voltage level is seen on either the folding mirror motor retract control circuit or the folding mirror motor extend control circuit.
