I03856
Wire harness side
Connector ”A”
Connector ”B”
AC3DX-01
-
AIR CONDITIONING
AIR CONDITIONING AMPLIFIER (Manual A/C)
AC-133
1974
Author:
Date:
2001 SIENNA (RM787U)
AIR CONDITIONING AMPLIFIER
(Manual A/C)
ON-VEHICLE INSPECTION
1.
INSPECT A/C AMPLIFIER CIRCUIT
(a)
Disconnect the connector from amplifier and inspect the
connector on wire harness side, as shown in the chart.
Test conditions:
Turn ignition switch to ON
Test connection
Condition
Specified condition
A6 - Ground
Constant
Continuity
A11 - A15
Evaporator temperature at 25
°
C (77
°
F)
Approx. 1.5 k
Ω
A16 - A15
Constant
65 - 125
Ω
at 20
°
C (68
°
F)
B5
B4
Temperature control dial at ”Max. COOL”
Approx. 6.0 k
Ω
B5 - B4
Temperature control dial at ”Max. WARM”
0 k
Ω
B6 - B4
Constant
6.0 k
Ω
B7
B4
Temperature control dial at ”Max. COOL”
Approx. 3.0 k
Ω
B7 - B4
Temperature control dial at ”Max. WARM”
0 k
Ω
A4
G
d
Constant
Battery positive voltage
A4 - Ground
Turn ignition switch to LOCK or ACC
No voltage
A10
G
d
A/C switch ON
Battery positive voltage
A10 - Ground
A/C switch OFF
No voltage
A12
G
d
A/C switch ON
Below 4.0 V
A12 - Ground
A/C switch OFF
No voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
Содержание RM787U
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