Page 481 of 3502

TROUBLE DIAGNOSIS
ATC-103
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AT C
2. CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between sunload sensor harness connector
M61 terminal 2 and unified meter and A/C amp. harness con-
nector M45 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK SUNLOAD SENSOR
1. Reconnect sunload sensor connector and unified meter and A/C amp. connector.
2. Refer to ATC-104, "
Sunload Sensor" .
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> 1. Replace sunload sensor.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
4. CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between sunload sensor harness connector
M61 terminal 1 and display and A/C auto amp. harness connec-
tor M45 terminal 50.
4. Check continuity between sunload sensor harness connector
M61 terminal 1 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.2 – 49 : Continuity should exist.
RJIA2028E
1 – 50 : Continuity should exist.
1 – Ground : Continuity should not exist.
RJIA2029E
Page 482 of 3502
ATC-104
TROUBLE DIAGNOSIS
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between unified meter and A/C amp. harness con-
nector M45 terminal 50 and ground.
When checking sunload sensor, select a place where sun shines directly on it.
If NG, replace sunload sensor.
RJIA3280E
SHA930E
Page 483 of 3502

TROUBLE DIAGNOSIS
ATC-105
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AT C
Intake Sensor CircuitBJS000GF
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit assembly. It
converts temperature of air after it passes through the evaporator
into a resistance value which is then input to the unified meter and A/
C amp.
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (24 or −24 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1. CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M256
terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between intake sensor harness connector
M256 terminal 2 and unified meter and A/C amp. harness con-
nector M45 terminal 49.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
RJIA3281E
RJIA1458E
1 – Ground : Approx. 5 V
RJIA1809E
2 – 49 : Continuity should exist.
RJIA1810E
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ATC-106
TROUBLE DIAGNOSIS
3. CHECK INTAKE SENSOR
Refer to ATC-106, "
Intake Sensor" .
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> 1. Replace intake sensor.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
4. CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between intake sensor harness connector
M256 terminal 1 and unified meter and A/C amp. harness con-
nector M45 terminal 41.
4. Check continuity between intake sensor harness connector
M256 terminal 1 and ground.
OK or NG
OK >> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis AT C - 4 7 , "
FUNCTION CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG >> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector M256, measure resis-
tance between terminals 1 and 2 at sensor side. Refer to the table
below.
If NG, replace intake sensor.1 – 41 : Continuity should exist.
1 – Ground : Continuity should not exist.
RJIA1811E
Temperature °C (°F) Resistance kΩ
−15 (5) 18.63
−10 (14) 14.14
−5 (23) 10.85
0 (32) 8.40
5 (41) 6.57
10 (50) 5.18
15 (59) 4.12
20 (68) 3.30
25 (77) 2.66
30 (86) 2.16
35 (95) 1.77
40 (104) 1.46
45 (113) 1.21
RJIA3282E
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A/C CONTROLLER
ATC-107
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A/C CONTROLLERPFP:27500
Removal and Installation of A/C and AV SwitchBJS000H4
REMOVAL
Refer to AV- 1 5 , "Removal and Installation of Audio Unit" (Integrated display system) or AV- 3 4 , "Removal and
Installation of Audio Unit" (Integrated color display system).
INSTALLATION
Installation is basically the reverse order of removal.
Page 486 of 3502
ATC-108
AUTO AMP
AUTO AMPPFP:27760
Removal and Installation of Unified Meter and A/C Amp.BJS000H6
REMOVAL
Refer to AV- 1 5 , "Removal and Installation of Audio Unit" (Integrated display system) or AV- 3 4 , "Removal and
Installation of Audio Unit" (Integrated color display system).
INSTALLATION
Installation is basically the reverse order of removal.
Page 487 of 3502
AMBIENT SENSOR
ATC-109
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AT C
AMBIENT SENSORPFP:27722
Removal and InstallationBJS000H7
REMOVAL
1. Remove engine undercover.
2. Disconnect ambient sensor connector, and then remove ambi-
ent sensor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA2180E
Page 488 of 3502
ATC-110
IN-VEHICLE SENSOR
IN-VEHICLE SENSORPFP:27720
Removal and InstallationBJS000H8
REMOVAL
1. Remove instrument driver lower panel. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove mounting screw, and then remove in-vehicle sensor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA3291E