Did you perform the Brake Transmission Shift Interlock System Check?

--

Go to Step 2

Go to Automatic Transmission Shift Lock Control System Check

1. Turn the ignition switch to the RUN position.
2. Connect a J 39200 digital multimeter (DMM) to the data link connector (DLC).
3. Select Body Control Module (SBM).
4. Inspect for SBM DTCs.

Do any body control module (SBM) DTCs appear on the scan tool?

--

Go to Diagnostic Trouble Code (DTC) List/Type

Go to Step 3

1. Leave the ignition switch in the RUN position.
2. Place the gear selector lever in the PARK position.
3. Disconnect stoplamp/BTSI switch connector C1.
4. Press and hold the brake pedal.
5. Attempt to move the gear shift lever to the NEUTRAL position.

Does the gear shift lever move to NEUTRAL?

--

Go to Step 4

Go to Step 5

Replace the stoplamp/BTSI switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes.

Is the repair complete?

--

Go to Step 8

--

Connect a J 39200 DMM between the stoplamp/BTSI switch connector C1 terminal B and ground. Refer to Probing Electrical Connectors in Wiring Systems.

Is the voltage greater than the specified value?

0.5 V

Go to Step 6

Go to Step 7

Repair short to battery positive voltage (B+) on CKT 1135 (DK GRN/WHT). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

--

Replace the shift interlock actuator. Refer to Automatic Transmission Shift Lock Control Disassemble - Off Vehicle and Automatic Transmission Shift Lock Control Assemble - Off Vehicle .

Is the repair complete?

--

Go to Step 8

--

1. Ensure that any components removed during diagnosis are installed in place.
2. Ensure that all of the connectors are connected.
3. Repeat the system check. Refer to Automatic Transmission Shift Lock Control System Check .

Is the system check complete?

--

System OK

--