Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.
Park Lock Solenoid Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SCHEMATICS Connector End View Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL CONNECTOR END VIEWS or Automatic Transmission Related Connector End Views on page 7-44 DEFINITION: Transmission shift lever does not lock in the PARK position with the ignition OFF. | |||
| 1 | Did you perform the Symptoms - Automatic Transmission Shift Lock Control tests and perform all the necessary inspections? | Go to Step 2 | Go to SYMPTOMS - AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL |
| 2 | Move the shift lever to the PARK position. Turn OFF the ignition. Press and hold the brake pedal. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the park position? | Go to Step 3 | Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS |
| 3 | Connect a test lamp between the park lock solenoid ignition 1 voltage circuit and a good ground. Does the test lamp illuminate? | Go to Step 5 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the park lock solenoid. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 6 |
| 5 | Repair the short to battery positive voltage in the park lock solenoid ignition 1 voltage circuit. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 7 | |
| 6 | Replace the park lock solenoid. Refer to FLOOR SHIFT CONTROL REPLACEMENT in Automatic Transaxle 4L60-E. Did you complete the repair? | Go to Step 7 | |
| 7 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2 |
PARK LOCK SOLENOID INOPERATIVE CHART
Shift Lever Does Not Move with Brake Pedal Depressed
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SCHEMATICS Connector End View Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL CONNECTOR END VIEWS or AUTOMATIC TRANSMISSION RELATED CONNECTOR END VIEWS DEFINITION: Transmission shift lever does not move out of the PARK position with the ignition ON and the brake pedal pressed. | |||
| 1 | Did you perform the symptom table tests and necessary inspections? | Go to Step 2 | Go to SYMPTOMS - AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL |
| 2 | Turn ON the ignition. Press and hold the brake pedal. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the PARK position? | Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS | Go to Step 3 |
| 3 | Turn Of-F the ignition. Disconnect the automatic transmission shift lock control switch. Turn ON the ignition, with the engine OFF. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the PARK position? | Go to Step 7 | Go to Step 4 |
| 4 | Turn OFF the ignition. Leave the automatic transmission shift lock control switch disconnected. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground. Turn ON the ignition with the engine OFF. Does the test lamp illuminate? | Go to Step 10 | Go to Step 5 |
| 5 | Turn OFF the ignition. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and a good ground. Turn ON the ignition with the engine OFF. Does the test lamp illuminate? | Go to Step 6 | Go to Step 9 |
| 6 | Turn OFF the ignition. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and the park lock solenoid ground circuit. Turn ON the ignition with the engine OFF. Does the test lamp illuminate? | Go to Step 8 | Go to Step 11 |
| 7 | Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 13 |
| 8 | Inspect for poor connections at the harness connector of the park lock/automatic transmission shift lock control solenoid assembly. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
| 9 | Repair the open or high resistance in the park lock solenoid ignition 1 voltage circuit. Refer to CIRCUIT TESTING or WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 14 | |
| 10 | Repair short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to CIRCUIT TESTING or WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 14 | |
| 11 | Repair the open or high resistance in the park lock solenoid ground circuit. Refer to CIRCUIT TESTING or WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 14 | |
| 12 | Replace the park lock/automatic transmission shift lock control solenoid. Refer to FLOOR SHIFT CONTROL REPLACEMENT in Automatic Transaxle 4L60-E. Did you complete the replacement? | Go to Step 14 | |
| 13 | Replace the automatic transmission shift lock control switch. Refer to STOP LAMP SWITCH REPLACEMENT in Lighting Systems. Did you complete the replacement? | Go to Step 14 | |
| 14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
SHIFT LEVER DOES NOT MOVE WITH BRAKE PEDAL DEPRESSED
Shift Lever Can Be Moved without Brake Pedal Depressed
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SCHEMATICS Connector End View Reference: AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL CONNECTOR END VIEWS or Automatic Transmission Related Connector End Views on page 7-44 DEFINITION: Transmission shift lock does not lock in the PARK position with the ignition ON and the brake pedal not press or with the ignition OFF. | |||
| 1 | Did you perform the Symptoms- Automatic Transmission Shift Lock Control tests and necessary inspections? | Go to Step 2 | Go to SYMPTOMS - AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL |
| 2 | Turn ON the ignition, with the engine OFF. Apply the parking brakes and block the wheels. Attempt to move the shift lever out of the PARK position without pressing the brake pedal. Does the shift lever move out of the PARK position? | Go to Step 3 | Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS |
| 3 | Turn OFF the ignition. Press and hold the brake pedal. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the PARK position? | Go to Step 4 | Go to Step 5 |
| 4 | Test for a short to battery positive voltage in the ignition 1 circuit of the park lock solenoid. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 8 |
| 5 | Connect a test lamp between the automatic transmission shift lock control switch ignition 1 voltage circuit and a good ground. Turn ON the ignition, with the engine OFF Does the test lamp illuminate? | Go to Step 6 | Go to Step 11 |
| 6 | Turn OFF the ignition. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control switch and a good ground. Turn ON the ignition, with the engine OFF. Press and release the brake pedal several times. Does the test lamp turn ON and OFF with the brake pedal? | Go to Step 7 | Go to Step 9 |
| 7 | Turn OFF the ignition. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground. Turn ON the ignition, with the engine OFF. Press and release the brake pedal several times. Does the test lamp turn ON and OFF with the brake pedal? | Go to Step 8 | Go to Step 10 |
| 8 | Inspect for poor connections at the harness connector of the automatic transmission shift lock control and park lock solenoids. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 13 |
| 9 | Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
| 10 | Repair the open in the automatic transmission shift lock control solenoid supply voltage circuit. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 14 | |
| 11 | Repair the open in the automatic transmission shift lock control switch ignition 1 voltage circuit. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. Did you complete the repair? | Go to Step 14 | |
| 12 | Replace the automatic transmission shift lock control switch. Refer to STOP LAMP SWITCH REPLACEMENT in Lighting Systems. Did you complete the replacement? | Go to Step 14 | |
| 13 | Replace the automatic shift lock control/park lock solenoids. Refer to FLOOR SHIFT CONTROL REPLACEMENT in Automatic Transaxle 4L60-E. Did you complete the replacement? | Go to Step 14 | |
| 14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
SHIFT LEVER CAN BE MOVED WITHOUT BRAKE PEDAL DEPRESSED
Scheme 193
Scheme 194
Scheme 195
Scheme 196
- Remove the console. Refer to CONSOLE REPLACEMENT in Instrument Panel, Gages, and Console.
- Disconnect the shift lock actuator (3) electrical connector.
- Remove the shift lock actuator manual release lever.
- Remove the shift lock actuator fasteners and remove the shift lock actuator.
Scheme 197
Scheme 198
Scheme 199
Scheme 200
- Install the shift lock actuator to the shift selector and install the fasteners.
- Install the shift lock actuator manual release lever.
- Connect the electrical connector (3).
- Install the console. Refer to CONSOLE REPLACEMENT in Instrument Panel, Gages, and Console.
Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components
- The automatic transmission shift lock control solenoid
- The automatic transmission shift lock control switch
With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.
Park Lock Solenoid
The park lock solenoid is a safety device that prevents an inadvertent shift out of PARK when the key is in the OFF position. The key must be in the RUN position to release the park lock solenoid.
The system consists of the park lock solenoid.
With the ignition in the ON position, voltage is supplied to the park lock solenoid. The park lock solenoid energizes through a permanent ground unlocking the shift lever. With the ignition in the OFF or ACCY position the park lock solenoid de-energizes and locks the shift lever in the park position.