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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)

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" Position 0
KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position 7.5-11.5
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 6-9
Shift Lock Solenoid
SLS+ - GND Ignition Switch In ACC, Shifter In "P" Position 0
SLS+ - GND Depress Brake Pedal 8-13.5
SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" Position 0
Shift Lock Control Switch
P1 - P Ignition Switch ON, Shifter In "P" Position, Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" Position 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" Position 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 (1997), GS400, LAND CRUISER, LX450, LX470, PASEO, PRIZM, 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" Position 0
KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position (2) 10-14
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 6-9
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) 5.5-9.5
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" Position 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" Position 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" Position 9-13.5
P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 0
(1) Voltage measurement after one second.
(2) Voltage is 7.5-11 volts on 1997-98 ES300.
NOTE: Ground (GND) terminal is also referred to as "E" terminal.
SHIFT LOCK SYSTEM PIN VOLTAGES (1998 GS300 & 1998 GS400)

Application & Terminals Description Voltage
ECU
ACC - GND Ignition Switch In ACC Position 10-14
ACC - GND Ignition Switch In ON Position 10-14
KLS - GND Ignition Switch In ACC, Shifter In "P" Position 0
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 6-9
SLS+ - GND Ignition Switch In ON, Shifter In "P" Position 0
SLS+ - GND Ignition Switch In ON, Depress Brake Pedal 3-6
SLS+ - GND Ignition Switch In ON, Release Brake Pedal 0
SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" Position 3-6
P1 - GND Shifter In "P" Position 0
P1 - GND Shifter Not In "P" Position 10-14
(1) Voltage measurement after one second.
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" Position 1.5 Or Less
KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position 8.5-10.5
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 7-8.5
Shift Lock Solenoid
SLS+ - SLS- Ignition Switch In ACC, Shifter In "P" Position 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" Position 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" Position 10-14
P2 - P Ignition Switch In ACC, Shifter In "P" Position 10-14
P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 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" Position 0
KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position 7.5-11
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 5.5-10
Shift Lock Solenoid
SLS+ - GND Ignition Switch In ACC, Shifter In "P" Position 0
SLS+ - GND Depress Brake Pedal 8-14
SLS+ - GND Ignition Switch In ACC, Shifter Not In "P" Position 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" Position 10-14
P2 - P Ignition Switch In ACC, Shifter In "P" Position 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 & 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" Position 0
KLS - GND Ignition Switch In ACC, Shifter Not In "P" Position 7.5-11
KLS - GND (1) Ignition Switch In ACC, Shifter Not In "P" Position 6-9.5
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) 6-8.5
SLS+ - SLS- Ignition Switch In ACC, Shifter Not In "P" Position 0
Shift Lock Control Switch
P1 - P Ignition Switch In ON Position, Shifter In "P" Position, Depress Brake Pedal 0
P1 - P Ignition Switch In ON, Shifter Not In "P" Position 9-13.5
P2 - P Ignition Switch In ACC, Shifter In "P" Position 9-13.5
P2 - P Ignition Switch In ACC, Shifter Not In "P" Position 0
(1) Voltage measurement after one second.
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