Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: Transmission shift lever does not lock in the PARK position with the ignition ON the brake pedal not depressed. | ||||
1 |
Does the test lamp illuminate? | -- | Go to Step 2 | Go to Step 7 |
2 | Connect a test lamp between the automatic transmission shift lock solenoid supply voltage circuit at the stoplamp/automatic transmission shift lock control switch and a good ground. Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 11 |
3 | Connect a test lamp between the automatic transmission shift lock solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground. Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 8 |
4 | Connect a test lamp between the neutral safety switch signal circuit at the automatic transmission shift lock control solenoid and a battery positive voltage (B+). Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 5 |
5 | Connect a test lamp between the neutral safety switch signal circuit at the transmission range switch and battery positive voltage (B+). Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 9 |
6 | Connect a test lamp between the transmission range switch ground circuit at the transmission range switch connector and battery positive voltage (B+). Does the test lamp illuminate? | -- | Go to Step 15 | Go to Step 10 |
7 | Repair the open or high resistance in the stoplamp/automatic transmission shift lock control voltage supply circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 17 | -- |
8 | Repair the open or high resistance in the automatic transmission shift lock solenoid supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 17 | -- |
9 | Repair the open or high resistance in the automatic transmission shift lock solenoid neutral safety switch signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 17 | -- |
10 | Repair the open or high resistance in the transmission range switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 17 | -- |
11 |
Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 12 |
12 | Replace the stoplamp/automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes Did you complete the repair? | -- | Go to Step 17 | -- |
13 | Inspect for poor connections at the automatic transmission shift lock control solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 14 |
14 | Replace the automatic transmission shift lock control solenoid. Refer to Automatic Transmission Shift Lock Control Replacement - Floor Shift Mounted . Did you complete the repair? | -- | Go to Step 17 | -- |
15 |
Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 16 |
16 | Replace the transmission range switch. Refer to Park/Neutral Position Switch Replacement . Did you complete the repair? | -- | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK | Go to Step 1 |
