SHIFT LOCK SYSTEM
With ignition on, when brake pedal is depressed, an input signal is sent from brakelight switch to the ECU. With shift lever in Park, an input signal from shift control switch is input to ECU, indicating shift lever is in Park. The ECU then operates shift lock solenoid, so shift lever can be moved from Park.
KEY LOCK SYSTEM
With ignition in ON or ACC position and shift lever in Park, shift lock control switch opens and voltage from ECU to key interlock solenoid is turned off. When key interlock solenoid is turned off, ignition key can be turned from ACC to LOCK position on ignition switch.
Note. If ignition is left in ACC or ON position with shift lever in any gear range except Park for about one hour, ECU then operates to release the lock mechanism.
ELECTRONIC CONTROL UNIT (ECU)
Access ECU. see scheme 1 The ECU is mounted under the center console, in front or back of shifter. Turn ignition on. Backprobing ECU harness connector with DVOM, check voltage between designated terminals. Voltage should be as specified. Refer to the appropriate SHIFT LOCK SYSTEM PIN VOLTAGES table. For circuit identification, see appropriate wiring diagram in WIRING DIAGRAMS.
Note. Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES
| Measure Between Terminals | Description | Voltage | |
|---|---|---|---|
| ECU | |||
| ACC-GND | Ignition Switch In ACC Position | 10-14 | |
| IG-GND | Ignition Switch In ON Position | 10-14 | |
| STP-GND | Depress Brake Pedal | 10-14 | |
| KLS-GND | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Ignition Switch In ACC, Shifter Except "P" | 10-14 | ||
| (1) Ignition Switch In ACC, Shifter Except "P" | 6-9 | ||
| Shift Lock Solenoid | |||
| SLS+-SLS | Ignition Switch In ACC, Shifter In "P" | 0 | |
| ** | Depress Brake Pedal | 8-13.5 | |
| ** | Depress Brake Pedal (After 20 Seconds) | 5.5-9.5 | |
| ** | Ignition Switch In ACC, Shifter Except "P" | 0 | |
| Shift Lock Control Switch | |||
| P1-P | Ignition Switch In ON Position | ** | |
| Shifter In "P", Depress Brake Pedal | 0 | ||
| Ignition Switch In ON, Shifter Except "P" | 9-13.5 | ||
| P2-P | Ignition Switch In ACC, Shifter In "P" | 9-13.5 | |
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| (1) Voltage measurement after 1 second. | |||
| (1) | Voltage measurement after 1 second. |
SHIFT LOCK SYSTEM PIN VOLTAGES (CAMRY, CELICA, COROLLA, ES300, GS300, LAND CRUISER, PASEO & TERCEL)
| Measure Between Terminals | Description | Voltage | |
|---|---|---|---|
| ECU | |||
| ACC-GND | Ignition Switch In ACC Position | 10-14 | |
| IG-GND | Ignition Switch In ON Position | 10-14 | |
| STP-GND | Depress Brake Pedal | 10-14 | |
| KLS-GND | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Ignition Switch In ACC, Shifter Except "P" | 7.5-11 | ||
| (1) Ignition Switch In ACC, Shifter Except "P" | 6-9.5 | ||
| Shift Lock Solenoid | |||
| SLS+-SLS | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Depress Brake Pedal | 8-13.5 | ||
| Depress Brake Pedal (After 20 Seconds) | 5.5-9.5 | ||
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| Shift Lock Control Switch | |||
| P1-P | Ignition Switch In ON Position | ** | |
| Shifter In "P", Depress Brake Pedal | 0 | ||
| Ignition Switch In ON, Shifter Except "P" | 9-13.5 | ||
| P2-P | Ignition Switch In ACC, Shifter In "P" | 9-13.5 | |
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| (1) Voltage measurement after 1 second. | |||
| (1) | Voltage measurement after 1 second. |
SHIFT LOCK SYSTEM PIN VOLTAGES (LS400, SC300, SC400 & SUPRA)
| Measure Between Terminals | Description | Voltage | |
|---|---|---|---|
| ECU | |||
| ACC-GND | Ignition Switch In ACC Position | 10-14 | |
| IG-GND | Ignition Switch In ON Position | 10-14 | |
| STP-GND | Depress Brake Pedal | 10-14 | |
| KLS-GND | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Ignition Switch In ACC, Shifter Except "P" | 7.5-11 | ||
| (1) Ignition Switch In ACC, Shifter Except "P" | 6-9 | ||
| Shift Lock Solenoid | |||
| SLS+-GND | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Depress Brake Pedal | 8-13.5 | ||
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| Shift Lock Control Switch | |||
| P1-P | Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal | 0 | |
| Ignition Switch In ON, Shifter Except "P" | 9-13.5 | ||
| P2-P | Ignition Switch In ACC, Shifter In "P" | 0-13.5 | |
| (1) Voltage measurement after 1 second. | |||
| (1) | Voltage measurement after 1 second. |
SHIFT LOCK SYSTEM PIN VOLTAGES (MR2)
| Measure Between Terminals | Description | Voltage | |
|---|---|---|---|
| ECU | |||
| ACC-GND | Ignition Switch In ACC Position | 10-14 | |
| IG-GND | Ignition Switch In ON Position | 10-14 | |
| STP-GND | Depress Brake Pedal | 10-14 | |
| KLS-GND | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Ignition Switch In ACC, Shifter Except "P" | 10-14 | ||
| (1) Ignition Switch In ACC, Shifter Except "P" | 6-9 | ||
| Shift Lock Solenoid | |||
| SLS+-SLS | Ignition Switch In ACC, Shifter In "P" | 0 | |
| Depress Brake Pedal | 10-14 | ||
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| Shift Lock Control Switch | |||
| P1-P | Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal | 0 | |
| Ignition Switch In ON, Shifter Except "P" | 10-14 | ||
| P2-P | Ignition Switch In ACC, Shifter In "P" | 10-14 | |
| Ignition Switch In ACC, Shifter Except "P" | 0 | ||
| (1) Voltage measurement after 1 second. | |||
| (1) | Voltage measurement after 1 second. |
SHIFT LOCK SYSTEM PIN VOLTAGES (PICKUP & 4RUNNER)
SHIFT LOCK SOLENOID
- Disconnect electrical connector from shift lock solenoid. Using ohmmeter, measure resistance between electrical terminals of shift lock solenoid.
- Replace shift lock solenoid if resistance is not within specification. See «SHIFT LOCK SOLENOID RESISTANCE SPECIFICATIONS»(ref-25486-S19168932082001011700000) table.
- Apply battery voltage between electrical terminals of shift lock solenoid. Replace shift lock solenoid if operating sound cannot be heard.
| Application | Ohms |
|---|---|
| Camry, Celica, ES300, GS300 & MR2 | 21-27 |
| Corolla, Paseo & Tercel | 30-35 |
| Land Cruiser, LS400, Pickup, SC300, SC400, Supra & 4Runner | 20-28 |
| Pickup & 4Runner | 29-36 |
SHIFT LOCK SOLENOID RESISTANCE SPECIFICATIONS
KEY INTERLOCK SOLENOID
- Disconnect electrical connector from key interlock solenoid. Using ohmmeter, measure resistance between electrical terminals of key interlock solenoid.
- Replace key interlock solenoid if resistance is not 12-17 ohms. Apply battery voltage between electrical terminals of key interlock solenoid. Replace key interlock solenoid if operating sound cannot be heard.
SHIFT LOCK CONTROL SWITCH
Note. Testing for Land Cruiser not available from manufacturer.
Disconnect electrical connector from shift lock control switch. Using ohmmeter, check continuity between specified terminals in relation to shift lever. See SHIFT LOCK CONTROL SWITCH CONTINUITY table. Replace switch if continuity is not as specified.
Note. Continuity must be checked in accordance with position of release button on shift lever and shift lever position.
| Shift Lever Position & Condition | Terminals |
|---|---|
| Park & Release Button Not Pushed | P & P1 |
| Any Other Gear Except Park | P & P2 |
SHIFT LOCK CONTROL SWITCH CONTINUITY
