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Electronic Control Unit (Ecu)

Access ECU. See Figure. 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. 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 & MR2)

Application & 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
KLS - GND Ign. Switch In ACC, Shifter Not In "P" 7.5-11.5
KLS - GND (1) Ign. Switch In ACC, Shifter Not In "P" 6-9
Shift Lock Solenoid
SLS+ - GND Ignition Switch In ACC, Shifter In "P" 0
SLS+ - GND Depress Brake Pedal 8-13.5
SLS+ - GND Ign. Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch ON, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" 9-13.5
(1) Voltage measurement after one second.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (CELICA, COROLLA, ES300, GS300, LAND CRUISER, LX450, PASEO, TACOMA & TERCEL)

Application & 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
KLS - GND Ignition Switch In ACC, Shifter Not In "P" (2) 10-14
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" 6-9
Shift Lock Solenoid
SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" 0
SLS+ - SLS- Depress Brake Pedal 8-13.5
SLS+ - SLS- Depress Brake Pedal, (After 20 Seconds) 5.5-9.5
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" 9-13.5
P2 - P Ignition Switch In ACC, Shifter Not In "P" 0
(1) Voltage measurement after one second.
(2) Voltage is 7.5-11 volts on 1996 ES300.
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 10-14
STP - GND Depress Brake Pedal 10-14
KLS - GND Ignition Switch In ACC, Shifter In "P" 1.5 Or Less
KLS - GND Ignition Switch In ACC, Shifter Not In "P" 8.5-10.5
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" 7-8.5
Shift Lock Solenoid
SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" 0
SLS+ - SLS- Depress Brake Pedal 8.8-12.5
SLS+ - SLS- Depress Brake Pedal, (After 20 Seconds) 6.5-9.2
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 10-14
P2 - P Ignition Switch In ACC, Shifter In "P" 10-14
P2 - P Ignition Switch In ACC, Shifter Not In "P" 0
(1) Voltage measurement after one second.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (PICKUP & 1995 4RUNNER)

Application & 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
KLS - GND Ignition Switch In ACC, Shifter Not In "P" 10-14
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" 6-9
Shift Lock Solenoid
SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" 0
SLS+ - SLS- Depress Brake Pedal 10-14
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 10-14
P2 - P Ignition Switch In ACC, Shifter In "P" 10-14
P2 - P Ignition Switch In ACC, Shifter Not In "P" 0
(1) Voltage measurement after one second.
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 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
KLS - GND Ignition Switch In ACC, Shifter Not In "P" 7.5-11
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" 5.5-10
Shift Lock Solenoid
SLS+ - GND Ignition Switch In ACC, Shifter In "P" 0
SLS+ - GND Depress Brake Pedal 8-14
SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 10-14
P2 - P Ignition Switch In ACC, Shifter In "P" 10-14
(1) Voltage measurement after one second.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (SC300, SC400, SUPRA & 1996 4RUNNER)

Application & 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
KLS - GND Ignition Switch In ACC, Shifter Not In "P" 7.5-11
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" 6-9.5
Shift Lock Solenoid
SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" 0
SLS+ - SLS- Depress Brake Pedal 8-13.5
SLS+ - SLS- Depress Brake Pedal (After 20 Seconds) 6-8.5
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P", Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" 9-13.5
P2 - P Ignition Switch In ACC, Shifter Not In "P" 0
(1) Voltage measurement after one second.
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