Toyota Sequoia (2005). Manual — part 525
I18633
D22
–
DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
DI–1895
2089
CLTB (*1) – GND1
(B6–4 – B6–6)
R–G – W–B
Automatic light control sen-
sor (IG)
Ignition switch OFF
Below 1 V
CLTB (*1) – GND1
(B6–4 – B6–6)
R–G – W–B
Automatic light control sen-
sor (IG)
Ignition switch ON
10 to 14 V
(*1): w/ Automatic Light Control
If the result is not as specified, there may be a malfunction on the wire harness side.
2.
CHECK DRIVER DOOR ECU
(a)
Disconnect the D22 ECU connector.
(b)
Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)
Wiring Color
Terminal Description
Condition
Specified Condition
SIG (D22–21) – Body ground
B–R –
Body ground
Ignition power supply
Ignition switch ON
10 to 14 V
CPUB (D22–23) – Body ground
W–R –
Body ground
+B (BATT) power supply
Always
10 to 14 V
MPX1 (D22–20) – Body ground
G–B –
Body ground
MPX line
Always
10 k
Ω
or higher
MPX2 (D22–8) – Body ground
W–L –
Body ground
MPX line
Always
10 k
Ω
or higher
BDR (D22–25) – Body ground
L–W –
Body ground
+B (BATT) power supply
Always
10 to 14 V
GND (D22–13) – Body ground
W–B –
Body ground
Ground
Always
Below 1
Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
I18633
F18
w/ Driving Position Memory:
DI–1896
–
DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
2090
3.
CHECK FRONT PASSENGER DOOR ECU
(a)
Disconnect the F18 ECU connector.
(b)
Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)
Wiring Color
Terminal Description
Condition
Specified Condition
SIG (F18–21) – Body ground
B–R –
Body ground
Ignition power supply
Ignition switch ON
10 to 14 V
BDR (F18–25) – Body ground
L–Y –
Body ground
+B (BATT) power supply
Always
10 to 14 V
MPX1 (F18–20) – Body ground
B – Body ground
MPX line
Always
10 k
Ω
or higher
MPX2 (F18–8) – Body ground
G–B –
Body ground
MPX line
Always
10 k
Ω
or higher
CPUB (F18–23) – Body ground
W–R –
Body ground
+B (BATT) power supply
Always
10 to 14 V
GND (F18–13) – Body ground
W–B –
Body ground
Ground
Always
Below 1
Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
I18630
F18
w/o Driving Position Memory:
–
DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
DI–1897
2091
(a)
Disconnect the F18 ECU connector.
(b)
Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)
Wiring Color
Terminal Description
Condition
Specified Condition
SIG (F18–19) – Body ground
B–R –
Body ground
Ignition power supply
Ignition switch ON
10 to 14 V
BDR (F18–20) – Body ground
L–Y –
Body ground
+B (BATT) power supply
Always
10 to 14 V
MPX1 (F18–10) – Body ground
B – Body ground
MPX line
Always
10 k
Ω
or higher
MPX2 (F18–11) – Body ground
G–B –
Body ground
MPX line
Always
10 k
Ω
or higher
CPUB (F18–12) – Body ground
W–R –
Body ground
+B (BATT) power supply
Always
10 to 14 V
GND (F18–8) – Body ground
W–B –
Body ground
Ground
Always
Below 1
Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
I18632
S19
DI–1898
–
DIAGNOSTICS
MULTIPLEX COMMUNICATION SYSTEM
2092
4.
CHECK SLIDING ROOF ECU
(a)
Disconnect the S19 ECU connector.
(b)
Measure the resistance or voltage of each terminal of the wire harness side connector.
Standard:
Symbols (Terminals No.)
Wiring Color
Terminal Description
Condition
Specified Condition
IG (S19–8) – Body ground
B–R –
Body ground
Ignition power supply
Ignition switch ON
10 to 14 V
B (S19–5) – Body ground
L–W –
Body ground
+B (BATT) power supply
Always
10 to 14 V
MPX1 (S19–2) – Body ground
G–O –
Body ground
MPX line
Always
10 k
Ω
or higher
E (S19–7) – Body ground
W–B –
Body ground
Ground
Always
Below 1
Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
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