TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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WD/Wiring Diagrams — Service Hints, page 168

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Service Hints — MK4 Supra Wiring Diagrams, page 168
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Page text (OCR transcript)
SERVICE HINTS
A20 (A), A21 (B), A22 (C) ABS AND TRACTION ECU
  (A) 7–GROUND : ALWAYS 10–14 VOLTS
  (A) 24–GROUND : 10–14 VOLTS WITH IGNITION SW AT ON POSITION
  (C) 6–GROUND : 10–14 VOLTS WITH STOP LIGHT SW ON
  (A) 25, (C) 4, (C) 9–GROUND : ALWAYS CONTINUOUS
  (C) 12–GROUND : 10–14 VOLTS WITH PARKING BRAKE LEVER PULLED UP (PARKING BRAKE SW ON)
A 6 (A), A 7 (B) ABS ACTUATOR
  (A) 1–GROUND : ALWAYS CONTINUOUS
  (B) 1, (B) 3, (B) 4, (B) 6–GROUND : APPROX. 1.2    (IGNITION SW OFF)
  (B) 2–GROUND : 4–6    (IGNITION SW OFF)
T 3 TRACTION BRAKE ACTUATOR
  1–3 : APPROX. 2.1
  2–4 : APPROX. 2.1
S11 STOP LIGHT SW
  2–1: CLOSED WITH BRAKE PEDAL DEPRESSED
A10, A11, A31, A32 ABS SPEED SENSOR FRONT LH, RH, REAR LH, RH
  1–2: 0.8– 1.3 K  (20˚C, 68˚F)
T 9(A), T10(B) TRACTION ECU
  (A)26–GROUND: 10–14 VOLTS WITH IGNITION SW AT ON POSTION
  (A)13–GROUND: ALWAYS 10–14 VOLTS
  (A)14–GROUND: ALWAYS BELOW 1 VOLTS
  (A)18–GROUND: 10–14 VOLTS WITH IGNITION SW ON PARKING BRAKE LEVER RELEASED (PARKING BRAKE SW OFF)
  (A) 3–GROUND: 10–14 VOLTS WITH STOP LIGHT SW ON
  (A) 5–GROUND: 10–14 VOLTS WITH TRAC OFF SW RELEASED
  (A)12–GROUND: ALWAYS 10–14 VOLTS
P 5 PARKING BRAKE SW
  1–GROUND : CLOSED WITH PARKING BRAKE LEVER DEPRESSED
S 4 SUB THROTTLE ACTUATOR
  2–1, 2–3 : APPROX. 1.1
  5–4, 5–6 : APPROX. 1.1

○ : PARTS LOCATION
CODE        SEE PAGE        CODE        SEE PAGE        CODE        SEE PAGE
A 6    A    24 (2JZ–GTE)    B 2         24 (2JZ–GTE)    S 5         25
A 7    B    24 (2JZ–GTE)    C10    A    28              S11         29
  A10       24 (2JZ–GTE)    C12    B    28              T 3         25
  A11       24 (2JZ–GTE)    D 1         24 (2JZ–GTE)    T 4         25
A20    A    28              D 5         28              T 5         29
A21    B    28              D 6         28              T 8         29
A22    C    28              E 9    B    29              T 9    A    29
  A23       28              E10    A    29              T10    B    29
  A31       30              P 5         29
  A32       30              S 4         25

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