Page 2889 of 3000

AC–146AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
OK:
The display is as specified in the normal condition.
NG
OK
(a) Remove the rear blower motor with the connector still
connected.
(b) Disconnect the connector from the rear blower motor.
(c) Connect the positive (+) lead to terminal 1 of the rear
blower motor connector, and the negative (-) lead to
terminal 2.
OK:
The rear blower motor operates smoothly.
NG
OK
(a) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK Go to step 2
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2INSPECT REAR BLOWER MOTOR
E147480E01
REPLACE REAR BLOWER MOTOR
3CHECK HARNESS AND CONNECTOR (REAR BLOWER MOTOR - BATTERY)
E147377E01
Tester Connection Condition Specified Condition
B13-2 - Body groundIgnition switch: ON
Rear blower control
dial: OFFBelow 1 V
B13-2 - Body groundIgnition switch: ON
Rear blower control
dial: ON11 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR
Page 2890 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–147
AC
(a) Disconnect the connector from the rear blower motor
controller.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
4CHECK HARNESS AND CONNECTOR (REAR BLOWER MOTOR CONTROLLER - BODY
GROUND)
E147481E01
Tester Connection Condition Specified Condition
B15-1 - Body ground Always Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR
5CHECK HARNESS AND CONNECTOR (REAR BLOWER MOTOR - REAR BLOWER
MOTOR CONTROLLER)
E147583E01
Tester Connection Condition Specified Condition
B13-1 - B15-3 Always Below 1
B13-1 - Body ground Always 10 k or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
Page 2891 of 3000
AC–148AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
OK
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Disconnect the connector from the rear blower motor
controller.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
6CHECK HARNESS AND CONNECTOR (REAR BLOWER MOTOR CONTROLLER - A/C
AMPLIFIER)
E147506E01
Tester Connection Condition Specified Condition
A10-5 (BLWH) - B15-2 Always Below 1
A10-6 (VMH) - B15-4 Always Below 1
A10-5 (BLWH) - Body
groundAlways 10 k or higher
A10-6 (VMH) - Body
groundAlways 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
7INSPECT REAR BLOWER MOTOR CONTROLLER
E108912E05
Tester Connection Condition Specified Condition
B15-3 - B15-4 Always 2.0 to 2.4 k
Page 2892 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–149
AC
(c) Connect the positive (+) lead to terminal 3 through a 12
V 3.4 W test bulb, and the negative (-) lead to terminal 1.
(d) Connect the three 1.5 V dry cell batteries' positive (+)
lead to terminal 2, and the negative (-) lead to terminal 1.
Then check that the test bulb comes on.
OK:
The test bulb comes on.
NG
OK
E147379E01
REPLACE REAR BLOWER MOTOR
CONTROLLER
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Page 2893 of 3000
AC–150AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
DESCRIPTION
The main power source is supplied to the A/C amplifier when the ignition switch is turned to the ON
position.
The power source is used for operating the A/C amplifier and servo motor, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.
(a) Remove the HTR fuse from the driver side junction
block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
IG Power Source Circuit
1INSPECT FUSE (HTR)
E130466E04
Tester Item Condition Specified Condition
HTR fuse Always Below 1
REPLACE FUSE (HTR)
Page 2894 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–151
AC
OK
(a) Remove the A/C amplifier with its connectors still
connected.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
2INSPECT A/C AMPLIFIER (IG - GND)
E147476E03
Tester Connection Condition Specified Condition
A9-18 (IG) - A9-1 (GND) Ignition switch: ON 11 to 14 V
Go to step 3
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
3CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)
E143742E46
Tester Connection Condition Specified Condition
A9-18 (IG) - Body groundIgnition switch: LOCK Below 1 V
Ignition switch: ON 11 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR
Page 2895 of 3000
AC–152AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
(a) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
4CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BODY GROUND)
E143742E47
Tester Connection Condition Specified Condition
A9-1 (GND) - Body ground Always Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE A/C AMPLIFIER
Page 2896 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–153
AC
DESCRIPTION
This circuit supplies power to the A/C amplifier and the illumination for the clock.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Remove the ECU ACC fuse from the engine room relay
block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
ACC Power Source Circuit
1INSPECT FUSE (ECU ACC)
E146556E02
Tester Item Condition Specified Condition
ECU ACC Fuse Always Below 1
REPLACE FUSE (ECU ACC)