GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Trans Sport 🢒 Steering 🢒 Steering Wheel and Column - Tilt 🢒 Automatic Transmission Shift Lock Control Always On With Ignition in RUN

Step

Action

Value(s)

Yes

No

Important: Use the J 35616 Connector Test Adapter kit if a diagnostic procedure requires testing or probing a terminal. Using the adapter prevents damage to the terminal and indicates if the contact tension is sufficient.

1
  1. Place the gear selector in the PARK position.
  2. Turn the ignition switch to the RUN position.
  3. Use a test lamp in order to backprobe between the stop lamp switch connector C2 terminal A CKT 39 and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

Use the test lamp in order to backprobe between the stop lamp switch connector C2 terminal B CKT 1135 and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the faulty connection or the open in CKT 39 between the stop lamp switch connector C2 terminal A and S209.

Is the repair complete?

--

System OK

--

4

Use a test lamp to backprobe between the brake transmission shift lock control actuator (BTSI) connector terminal A CKT 1135 and ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

5
  1. Test for a faulty connection at the stop lamp switch.
  2. If the connection is OK, adjust or replace the stop lamp switch.Refer to Stop Lamp Switch Adjustment

Is the repair complete?

--

System OK

--

6

Use a test lamp in order to backprobe the BTSI connector terminal B CKT 434.

Does the test lamp light?

--

Go to Step 9

Go to Step 8

7

Repair the faulty connection or the open in CKT 1135 between the stop lamp switch connector C2 terminal B and the BTSI connector terminal A.

Is the repair complete?

--

System OK

--

8
  1. Test for a faulty connection at the BTSI.
  2. If the connection is OK, replace the BTSI. Refer to Automatic Transmission Shift Lock Control Inoperative .

Is the repair complete?

--

System OK

--

9

Use a test lamp in order to frontprobe between the transaxle range switch connector C1 terminal A CKT 434 and ground.

Does the test lamp light?

--

Go to Step 11

Go to Step 10

10

Repair the faulty connection or the open in CKT 434 between the BTSI terminal B and the transaxle range switch connector C1 terminal A.

Is the repair complete?

--

System OK

--

11

Use a test lamp in order to frontprobe the transaxle range switch connector C1 terminal D CKT 451 and B+.

Does the test lamp light?

--

Go to Step 12

Go to Step 13

12
  1. Inspect for a faulty connection at the transaxle range switch.
  2. If the connection is OK, adjust or replace the transaxle range switch. Refer to Park/Neutral Position Switch Replacement

Is the repair complete?

--

System OK

--

13

Inspect for a faulty connection or an open in CKT 451 between the transaxle range switch connector C1 terminal D and ground connector G113.

Is the repair complete?

--

System OK

--