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.
