Pinout Values and Diagnostic Parameters

MULTIPLEX COMMUNICATION SYSTEM INCLUDES FOLLOWING SYSTEMS
- AUTOMATIC AIR CONDITIONING
- AUTOMATIC LIGHT CONTROL
- CHARGING
- COMBINATION METER
- CRUISE CONTROL (3UZ-FE)
- CRUISE CONTROL (2JZ-GE)
- ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR (3UZ-FE)
- ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR (2JZ-GE)
- ENGINE CONTROL (3UZ-FE)
- ENGINE CONTROL (2JZ-GE)
- HEADLIGHT
- INTERIOR LIGHT
- KEY REMINDER AND SEAT BELT WARNING
- LEXUS NAVIGATION SYSTEM
- LIGHT AUTO TURN OFF
- MOON ROOF
- POWER SEAT (DRIVER'S SEAT w/ DRIVING POSITION MEMORY)
- POWER TILT AND POWER TELESCOPIC
- POWER WINDOW
- REAR WINDOW DEFOGGER AND MIRROR HEATER
- REMOTE CONTROL MIRROR
- SRS
- STOP LIGHT
- TAILLIGHT
- THEFT DETERRENT AND DOOR LOCK CONTROL
- VSC
- WIRELESS DOOR LOCK CONTROL

BODY ECU NO.2
1 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
8 - GROUND : Always approx. 12 volts
11 - GROUND : Always continuity

G6 GATEWAY ECU
8 - GROUND : Always approx. 12 volts
2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
9 - GROUND : Approx. 12 volts with ignition SW at ACC or ON position
7 - GROUND : Always continuity
14 - GROUND : Always continuity

B5(A) BODY ECU NO.1
1 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
4 - GROUND : Always approx. 12 volts
8 - GROUND : Always approx. 12 volts
11 - GROUND : Always continuity
(A)15 - GROUND : Approx. 12 volts with ignition SW at ACC or ON position

D22 (A), D24 (C) DRIVER DOOR ECU
(C) 2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(C) 3 - GROUND : Always approx. 12 volts
(A) 1 - GROUND : Always approx. 12 volts
(C)12 - GROUND : Always continuity

F11 (A), F13 (C) FRONT PASSENGER DOOR ECU
(A) 2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(A) 3 - GROUND : Always approx. 12 volts
(C) 1 - GROUND : Always approx. 12 volts
(A)12 - GROUND : Always continuity

R12 REAR DOOR LH ECU
9 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
15 - GROUND : Always approx. 12 volts
14 - GROUND : Always approx. 12 volts
25 - GROUND : Always continuity

R13 REAR DOOR RH ECU
9 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
15 - GROUND : Always approx. 12 volts
14 - GROUND : Always approx. 12 volts
20 - GROUND : Always continuity
25 - GROUND : Always continuity

Power Window

B6 BODY ECU NO.2
1 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
8 - GROUND : Always approx. 12 volts
11 - GROUND : Always continuity

B5 (A) BODY ECU NO.1
1 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
8 - GROUND : Always approx. 12 volts
11 - GROUND : Always continuity
4 - GROUND : Always approx. 12 volts
(A) 15 - GROUND : Approx. 12 volts with ignition SW at ACC or ON position

D22 (A), D24 (C) DRIVER DOOR ECU
(A) 1 - GROUND : Always approx. 12 volts
(C) 3 - GROUND : Always approx. 12 volts
(C) 2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(C)12 - GROUND : Always continuity

F11 (A), F13 (C) FRONT PASSENGER DOOR ECU
(A) 2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(A) 3 - GROUND : Always approx. 12 volts
(A)12 - GROUND : Always continuity
(C) 1 - GROUND : Always approx. 12 volts

R12 REAR DOOR LH ECU
9 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
14 - GROUND : Always approx. 12 volts
15 - GROUND : Always approx. 12 volts
25 - GROUND : Always continuity

R13 REAR DOOR RH ECU
9 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
15 - GROUND : Always approx. 12 volts
14 - GROUND : Always approx. 12 volts
20 - GROUND : Always continuity
25 - GROUND : Always continuity

P11 POWER WINDOW MASTER SW
15 - 6 : Closed with power window master SW at MANUAL UP position
15 - 18 : Closed with power window master SW at MANUAL DOWN position
15 - 6, 7 : Closed with power window master SW at AUTO UP position
15 - 18, 7 : Closed with power window master SW at AUTO DOWN position

P8, P9, P10 POWER WINDOW CONTROL SW FRONT RH, REAR LH, REAR RH
3 - 6 : Closed with power window SW at MANUAL UP operation
3 - 4 : Closed with power window SW at MANUAL DOWN operation
3 - 6, 5 : Closed with power window SW at AUTO UP operation
3 - 4, 5 : Closed with power window SW at AUTO DOWN operation

WINDOW LOCK SW
Open with window lock SW at LOCK position
Light Auto Turn OFF

C14 COMBINATION SW
15 - 16 : Closed with light control SW at TAIL or HEAD position
14 - 16 : Closed with light control SW at HEAD position
13 - 16 : Closed with light control SW at AUTO position

W5 WIRELESS DOOR LOCK ECU
7 - GROUND : Always approx. 12 volts
1 - GROUND : Always continuity

D13, D14, D15, D16 DOOR COURTESY SW FRONT LH, RH, REAR LH, RH
1 - 2 : Closed with door open

D23 (B) DRIVER DOOR ECU
15 - 14 : Continuity with driver door open

F12 (B) FRONT PASSENGER DOOR ECU
15 - 14 : Continuity with front passenger door open

R12 REAR DOOR LH ECU
8 - 18 : Continuity with rear LH door open

R13 REAR DOOR RH ECU
8 - 18 : Continuity with rear RH door open

Illumination

TAIL RELAY
5 - 3 : Closed with light control SW at TAIL or HEAD position

C14 LIGHT CONTROL SW [COMB. SW]
15 - 16 : Closed with light control SW at TAIL or HEAD position

Combination Meter

B1 BRAKE FLUID LEVEL WARNING SW
1 - 2 : Closed with float down

P4 PARKING BRAKE SW
1 - GROUND : Closed with parking brake pedal depressed

O2 OIL PRESSURE SW
1 - GROUND : Closed with oil pressure below approx. 0.2 kgf/sq.cm (2.8 psi, 20 kpa)

E11 ENGINE OIL LEVEL SENSOR
1 - 2 : Closed with float up and engine oil temperature at below approx. 50 °C (122 °F)
Open with float down and engine oil temperature at above approx. 60 °C (140 °F)

F15 FUEL SENDER
2 - 3 : Approx. 2.0 ohm at fuel full
Approx. 48.7 ohm at fuel empty

C12 (A), C13 (B) COMBINATION METER
(A) 1 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(A) 22 - GROUND : Always continuity
(B) 8 - GROUND : Always continuity
(A) 13 - GROUND : Always approx. 12 volts
(A) 14 - GROUND : Always approx. 12 volts