2010 Cadillac CTS Sedan AWD V6-3.6L Page 358

2010 Cadillac CTS Sedan AWD V6-3.6L Page 358

* Steering column tilt motor terminal A and terminal B

B1340 42 or B1340 4B

If either DTC is set, replace the MSM.

Component Testing

Seat Motor

1. Ignition OFF, disconnect the harness connector at the appropriate seat motor.

Important: When performing the following tests, make sure that the seat is not already in the position the test is attempting to

produce.

2. Install a 30 A fused jumper wire between the control terminal 1 and 12 volts. Momentarily install a jumper wire between the control terminal

5 and ground. The seat motor should momentarily perform the appropriate FORWARD/REARWARD/UP/DOWN function.

瀚慖f the function does not perform as specified, replace the seat motor.

3. Reverse the polarity of jumper wires. The a seat motor should perform in the opposite direction.

瀚慖f the function does not perform as specified, replace the seat motor.

Repair Instructions

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

* Steering Column Tilt Wheel Actuator Motor Replacement (See: Steering and Suspension/Steering/Steering Column/Tilt Wheel

Motor/Service and Repair)

* Steering Column Telescope Actuator Motor Replacement (See: Steering and Suspension/Steering/Steering Column/Telescoping Wheel

Motor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, programming and setup

Supplemental Inflatable Restraints

DTC B1370

Diagnostic Instructions

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

Check - Vehicle) prior to using the 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 B1370 06

- Device Ignition 1 Circuit Short to Ground or Open

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) monitors the ignition 1 signal from the ignition switch. When the vehicle ignition

switch is placed in the RUN or CRANK position, the switch supplies voltage to the SDM ignition 1 input terminal.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

The SDM detects a short to ground or an open in the ignition 1 voltage circuit for at least 10 seconds when the ignition switch is in RUN or

CRANK.

Action Taken When the DTC Sets

* The SDM commands the AIR BAG indicator ON.

* The SDM determines its power mode from the serial data message and discards the ignition 1 input for the remainder of the ignition cycle.