2010 Cadillac CTS Sedan AWD V6-3.6L Page 76
Parking Assist Systems/Collision Avoidance Sensor/Service and Repair/Pedestrian Impact Detection Sensor Replacement - Rear Upper
Beam)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for pedestrian impact detection module
replacement, setup, and programming
B0012
DTC B0012 or B0013
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 B0012 01
- Driver Frontal Deployment Loop Stage 1 Short to Battery
DTC B0012 02
- Driver Frontal Deployment Loop Stage 1 Short to Ground
DTC B0012 04
- Driver Frontal Deployment Loop Stage 1 Open Circuit
DTC B0012 0D
- Driver Frontal Deployment Loop Stage 1 Resistance Above Threshold
DTC B0012 0E
- Driver Frontal Deployment Loop Stage 1 Resistance Below Threshold
DTC B0013 01
- Driver Frontal Deployment Loop Stage 2 Short to Battery
DTC B0013 02
- Driver Frontal Deployment Loop Stage 2 Short to Ground
DTC B0013 04
- Driver Frontal Deployment Loop Stage 2 Open Circuit
DTC B0013 0D
- Driver Frontal Deployment Loop Stage 2 Resistance Above Threshold
DTC B0013 0E
- Driver Frontal Deployment Loop Stage 2 Resistance Below Threshold
Diagnostic Fault Information
Circuit/System Description
During a frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the
deployment loop in order to deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to check
for proper circuit continuity and for shorts to ground or voltage.
There are 2 shorting bars used within the steering wheel module coil connector which will short together both steering wheel module stage 1 high
circuit and steering wheel module stage 1 low circuit and both steering wheel module stage 2 high circuit and steering wheel module stage 2 low
circuit when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.
