SHIFT INTERLOCK SYSTEMS -1999 Toyota Sienna LE
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ARTICLE BEGINNING
DESCRIPTION
Transmission/transaxle is equipped with a electronically controlled shift lock and key lock system. See Fig. 1 . Shift lock system prevents shift lever from being moved from Park unless brake pedal is depressed. In case of a malfunction, shift lever can be released by depressing shift lock override button, located near shift lever. Key lock system prevents ignition key from being moved from ACC to LOCK position on ignition switch unless shift lever is in Park.
System consists of brakelight switch, key interlock solenoid, shift lock control switch, shift lock control Electronic Control Unit (ECU), shift lock solenoid and shift lock release button. All models may not be equipped with all components. See Fig. 1 .
NOTE: Sienna is equipped with cable operated shift lock system. See CABLE OPERATED SHIFT LOCK SYSTEM CHECK and ADJUSTMENTS .
Fig. 1: Shift & Key Lock System Component Locations (Typical)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OPERATION
SHIFT LOCK SYSTEM
With ignition on, when brake pedal is depressed, an input signal is sent from brakelight switch to ECU. With shift lever in Park, an input signal from shift control switch is input to ECU, indicating shift lever is in Park. 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.
COMPONENT TESTS
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 lock mechanism.
ELECTRONIC CONTROL UNIT (ECU)
Access ECU. See Fig. 1 . ECU is under center console, in front or back of shifter. Turn ignition on. Backprobing ECU harness connector with DVOM, check voltage between designated terminals.
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SHIFT INTERLOCK SYSTEMS -1999 Toyota Sienna LE
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Voltage should be as specified. See 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 (AVALON, CAMRY, CAMRY SOLARA, COROLLA, ES300 & RX300)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position IG - GND Ignition Switch In ON Position STP - GND Depress Brake Pedal 10-14 KLS - GND Ignition Switch In ACC, Shifter In "P" Position KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Solenoid SLS+ - GND Ignition Switch In ACC, Shifter In "P" Position SLS+ - GND Depress Brake Pedal 8-13.5 SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Control Switch P1 - P Ignition Switch ON, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position P2 - P Ignition Switch In ACC, Shifter In "P" Position 9-13.5 10-14 0 6-9 0 9-13.5 10-14 0 7.5-11.5 0
(1) Voltage measurement after one second.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (CELICA, LAND CRUISER, LX470 & TACOMA)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position IG - GND Ignition Switch In ON Position 10-14 10-14
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STP - GND KLS - GND
KLS - GND
KLS - GND
Shift Lock Solenoid SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" Position 0 SLS+ - SLS- Depress Brake Pedal 8-13.5 SLS+ - SLS- Depress Brake Pedal, (After 20 Seconds) SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Control Switch P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position 9-13.5 P2 - P Ignition Switch In ACC, Shifter In "P" Position P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 5.5-9.5 0 0 0 9-13.5
(1) Voltage measurement after one second.
Depress Brake Pedal 10-14 Ignition Switch In ACC, Shifter In "P" Position Ignition Switch In ACC, Shifter Not In "P" Position 6-9 0 10-14 (1) Ignition Switch In ACC, Shifter Not In "P" Position
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (GS300 & GS400)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position 10-14 ACC - GND Ignition Switch In ON Position KLS - GND Ignition Switch In ACC, Shifter In "P" Position KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position SLS+ - GND Ignition Switch In ON, Shifter In "P" Position SLS+ - GND Ignition Switch In ON, Depress Brake Pedal 10-14 6-9 3-6 0 0
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SHIFT INTERLOCK SYSTEMS -1999 Toyota Sienna LE
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SLS+ - GND
SLS+ - GND
P1 - GND P1 - GND
(1) Voltage measurement after one second.
Ignition Switch In ON, Release Brake Pedal Ignition Switch In ACC, Shifter Not In "P" Position Shifter In "P" Position 0 Shifter Not In "P" Position 10-14 0 3-6
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (LS400)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position 10-14 IG - GND Ignition Switch In ON Position STP - GND Depress Brake Pedal 10-14 KLS - GND Ignition Switch In ACC, Shifter In "P" Position KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Solenoid SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" Position SLS+ - SLS- Depress Brake Pedal 8.8-12.5 SLS+ - SLS- Depress Brake Pedal, (After 20 Seconds) SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Control Switch P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position P2 - P Ignition Switch In ACC, Shifter In "P" Position P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 10-14 8.5-10.5 0 0 10-14 0 1.5 Or Less 6.5-9.2 10-14 7-8.5 0
(1) Voltage measurement after one second.
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SHIFT INTERLOCK SYSTEMS -1999 Toyota Sienna LE
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NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (RAV4)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position IG - GND Ignition Switch In ON Position STP - GND Depress Brake Pedal 10-14 KLS - GND Ignition Switch In ACC, Shifter In "P" Position KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Solenoid SLS+ - GND Ignition Switch In ACC, Shifter In "P" Position SLS+ - GND Depress Brake Pedal 8-14 SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Control Switch P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position P2 - P Ignition Switch In ACC, Shifter In "P" Position 10-14 0 6-8.5 0 10-14 10-14 0 10-14 8-13.5 0
(1) Voltage measurement after one second.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (SC300 & SC400)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position IG - GND Ignition Switch In ON Position STP - GND Depress Brake Pedal 10-14 KLS - GND Ignition Switch In ACC, Shifter In "P" Position 10-14 1.5 Or Less 10-14
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KLS - GND
Ignition Switch In ACC, Shifter Not In "P" Position
8.5-10.5
6.5-8.5
Shift Lock Solenoid SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" Position 0 SLS+ - SLS- Depress Brake Pedal 8.0-12.5 SLS+ - SLS- Depress Brake Pedal, (After 20 Seconds) 6.5-9.2 SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Control Switch P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position 10-14 P2 - P Ignition Switch In ACC, Shifter In "P" Position P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 0 10-14 0 0
(1) Voltage measurement after one second.
KLS - GND
(1) Ignition Switch In ACC, Shifter Not In "P" Position
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (4RUNNER)
Application & Terminals Description Voltage ECU ACC - GND Ignition Switch In ACC Position 10-14 IG - GND Ignition Switch In ON Position STP - GND Depress Brake Pedal 10-14 KLS - GND Ignition Switch In ACC, Shifter In "P" Position KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position Shift Lock Solenoid SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" Position SLS+ - SLS- Depress Brake Pedal 8-13.5 10-14 7.5-11 0 0 6-9.5
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SLS+ - SLS-
SLS+ - SLS-
Depress Brake Pedal (After 20 Seconds) Ignition Switch In ACC, Shifter Not In "P" Position
6-8.5
0
Shift Lock Control Switch P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal P1 - P Ignition Switch In ON, Shifter Not In "P" Position P2 - P Ignition Switch In ACC, Shifter In "P" Position P2 - P Ignition Switch In ACC, Shifter Not In "P" Position
0
9-13.5
9-13.5
0
(1) Voltage measurement after one second.
SHIFT LOCK SOLENOID
1.Disconnect electrical connector from shift lock solenoid. Using ohmmeter, measure resistance between shift lock solenoid terminals. See WIRING DIAGRAMS . 2.Replace shift lock solenoid if resistance is not within specification. See SHIFT LOCK SOLENOID RESISTANCE SPECIFICATIONS table. Apply battery voltage between shift lock solenoid terminals. Replace shift lock solenoid if operating sound cannot be heard.
SHIFT LOCK SOLENOID RESISTANCE SPECIFICATIONS Application Ohms Avalon, Camry, Camry Solara & Tacoma (A43D) 30-35 Celica, Corolla, GS300, GS400 & 4Runner 21-27 ES300 & RX300 29-36 Land Cruiser, LS400, LX470, SC300, SC400 & Tacoma (A-340E/F) 20-28 RAV4 26-33
KEY INTERLOCK SOLENOID
1.Disconnect electrical connector from key interlock solenoid. Using ohmmeter, measure resistance between key interlock solenoid terminals. See WIRING DIAGRAMS . 2.Replace key interlock solenoid if resistance is not 12-17 ohms. Apply battery voltage between of key interlock solenoid terminals. Replace key interlock solenoid if operating sound cannot be heard.
SHIFT LOCK CONTROL SWITCH
Disconnect electrical connector from shift lock control switch. Using ohmmeter, check continuity between specified terminals in relation to shift lever. See WIRING DIAGRAMS . See SHIFT
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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 LOCK CONTROL SWITCH CONTINUITY
Shift Lever Position & Condition Any Other Gear Except Park Park & Release Button Not Pushed Park & Release Button Is Pushed
Terminals P & P2 P & P1 P & P1 Or P & P2
CABLE OPERATED SHIFT LOCK SYSTEM CHECK
Sienna
Ensure shift lock cable does not interfere with wiring harness. Ensure ignition switch turns to LOCK position when shift lever is in "P" position. Ensure brake pedal returns fully. Ensure shift lock is released when brake pedal is depressed with ignition switch at ACC, ON or START position.
ADJUSTMENTS
PARKING LOCK CABLE
Sienna
Place shift lever in "P" position. Turn ignition switch to LOCK position. Loosen 2 bolts and ensure pedal button touches pedal plate cushion. Tighten 2 bolts to 97 INCH lbs. (11 N.m).
