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Toyota Sequoia (2005). Manual - part 748
F19340
A
B
Four Wheel Drive Control ECU:
Transfer Actuator:
–
TRANSFER
ONE TOUCH 2–4 SELECTOR SYSTEM
TR–43
2981
10.
INSPECT ACTUATOR
NOTICE:
Inspect the actuator with the transfer removed from the vehicle.
(a)
Turn the ignition switch to ON.
(b)
Check the operating sound produced by four wheel drive control switch operation and the differential
lock switch operation.
If the operating sound cannot be heard, check the four wheel control ECU and the wire harness in the next
step. When the wire harness and four wheel drive control ECU are normal, replace the actuator.
11.
INSPECT WIRE HARNESS
(a)
Disconnect the actuator connector and four wheel drive
control ECU connector.
(b)
Check continuity of the wire harness between the four
wheel drive control ECU and the actuator.
Tester connection
Specified condition
TM1 (A–2) – TM1 (B–2)
Continuity
TM2 (A–1) – TM2 (B–1)
Continuity
TL1 (A–41) – TL1 (B–3)
Continuity
TL2 (A–40) – TL2 (B–4)
Continuity
TL3 (A–39) – TL3 (B–5)
Continuity
HM2 (A–4) – HM2 (B–7)
Continuity
HM1 (A–3) – HM1 (B–8)
Continuity
P1 (A–10) – CDL (B–9)
Continuity
HL2 (A–42) – HL2 (B–11)
Continuity
HL1 (A–23) – HL1 (B–12)
Continuity
GND (A–7) – GND (B–6)
Continuity
GND (A–7) – GND (B–10)
Continuity
If continuity is not as specified, repair or replace the wire har-
ness.