2010 Cadillac CTS Sedan AWD V6-3.0L Page 1781

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1781

(DTC) Type Definitions)

Scan Tool Reference

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

Circuit/System Verification

1. Engine running, park brake applied, drive wheels chocked. Shift the transmission into the manual (M) position. Verify with a scan tool the

following TCM parameters display the correct values:

* Drivers Shift Control - Inactive

* Drivers Shift Request - None

2. Verify with a scan tool the following TCM parameters display the correct values when pressing the automatic transmission manual shift

switch-right:

* Drivers Shift Control - Active

* Drivers Shift Request - Upshift

3. Verify with a scan tool the following TCM parameters display the correct values when pressing the automatic transmission manual shift

switch-left:

* Drivers Shift Control - Active

* Drivers Shift Request - Downshift

Circuit/System Testing

1. Ignition OFF, disconnect the automatic transmission manual shift switch left and right wire harness connector.

2. Ignition ON, test for 11-13 volts on terminal 2 on both the automatic transmission manual shift switch left and right harness connectors and

ground.

瀚慖f not within the specified value, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the BCM.

3. Ignition OFF, test for infinite resistance between terminal 1 and terminal 2 on the automatic transmission manual shift switch-right, with the

switch open.

瀚慖f not the specified value, replace the automatic transmission manual shift switch-right

4. Ignition OFF, test for 1.20-1.50 k ohm between terminal 1 and terminal 2 on the automatic transmission manual shift switch-right, with the

switch closed.

瀚慖f not within the specified value, replace the automatic transmission manual shift switch-right.

5. Ignition OFF, test for infinite resistance between terminal 1 and terminal 2 on the automatic transmission manual shift switch-left, with the

switch open.

瀚慖f not within the specified value, replace the automatic transmission manual shift switch-right.

6. Ignition OFF, test for 1.50-1.80 k ohm between terminal 1 and terminal 2 on the automatic transmission manual shift switch-left, with the

switch closed.

瀚慖f not within the specified value, replace the automatic transmission manual shift switch-left.

7. Ignition OFF, connect a 3A fused jumper wire between terminal 1 and terminal 2 on the automatic transmission manual shift switch-left

harness connector.

8. Ignition ON, test for 11-13 volts on the BCM connector X1 terminal 7 and ground.

瀚慖f not within the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the BCM.

Repair Instructions

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

* Refer to Manual Shift Auxiliary Position Switch Replacement - Steering Wheel ().

* Replace the body control module. Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for

replacement, setup, and programming.