TSRM/MK4 Supra/Wiring Diagrams
Repair ManualWiring Diagrams
p.012

ABS/ABS and Traction Control — Service Hints and Parts Location, page 13

13 / 15
p.014
Service Hints and Parts Location — MK4 Supra ABS and Traction Control wiring diagram, page 13
100%
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 POSITION
(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   29   24 (2JZ–GTE)          C12      B      28                    T 3           25
         A11   A    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