2001 TOYOTA PRIUS Service Repair Manual

I18391
A/C Amplifier
AOF A910
W II12
AOD A910
IG A71
GND A77 L
F18
FL Block No. 2
BatteryA16
Air Outlet
Servomotor
Instrument Panel J/B
I15
Ignition
SW 4
BR±R
J20
J/C
C 5
W II11
C
R R 2D3
2H1
2D6
2K8
2B3
8
2D HTR
IG1 Relay
AM1B±Y
J/C 35
214
W±GIG1
AM1
2 W
W±B J23A
J22A
W±B
A
J11
J/C
ID MAINFL Block No. 1
F111
F131
1DC/DC DI±918
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2001 PRIUS (RM778U)
WIRING DIAGRAM

Temp. setting °C (°F) Air Flow
FACE
B/L
FOOT
FOOT/DEFDEF
Max. COOL e 20.5 (66)
21.0 e 23.5 (67 e72)
24.0 e 26.0 (73 e77)
26.5 e 29.0 (78 e83)
29.5 (84) eMax. WARM
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±919
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Actuator check.
PREPARATION:
(a) Set to the actuator check mode (See page DI±866).
(b) Press the DEF switch and change to step operation.
CHECK:
Press the DEF switch in order and check the condition of air flow
mode.
OK:
The mode changes with the change in the tempera-
ture setting as shown in the table.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±874).
NG

I19083
To FACE
4
5
I19084(+) (±) To FACE
4
5
DI±920
± DIAGNOSTICSAIR CONDITIONING SYSTEM
2001 PRIUS (RM778U)
2 Check air outlet control servomotor.
PREPARATION:
Remove air outlet control servomotor (See page AC±57).
CHECK:
Connect positive (+) lead to terminal 4 and negative (±) lead to
terminal 5.
OK:
The lever moves smoothly to FACE position.
CHECK:
Connect positive (+) lead to terminal 5 and negative (±) lead to
terminal 4.
OK:
The lever moves smoothly to DEF position.
NG Replace air outlet servomotor.
OK
3 Check for open and short in harness and connector between A/C amplifier and
air outlet servomotor (See page IN±41).
NG Repair or replace harness or connector.
OK
Check and replace A/C amplifier.

I18389
A/C Amplifier
IG A71
GND A77
F18
FL Block No. 2
BatteryInstrument Panel J/B
I15
Ignition
SW J20
J/C
C
R C
R 2D3
2H1
2D6
2K8
2B3
8
2D HTR
IG1 Relay
AM1B±Y
J/C 35
21
4
IG1
AM1
2
W
J25A
J24A
A
J11
J/C
ID MAINFL Block No. 1
F111
F131
4DC/DC
B±GW±B
W±B
± DIAGNOSTICSAIR CONDITIONING SYSTEM
DI±921
2001 PRIUS (RM778U)
IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the A/C amplifier (contains the ECU) and servomotors, etc.
WIRING DIAGRAM
DI7SI±01