Toyota Sequoia (2005). Manual — part 630
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2315
2509
BLOWER LEVEL
Blower motor speed level /
min.: Level 0 max.: 31
Increases within a range between
0 and 31 as the speed increases.
–
AMBI TEMP
Adjusted ambient temperature /
min.: –30.8
°
C (–23.44
°
F)
max.: 50.8
°
C (123.44
°
F)
–
–
SET TEMP SHIFT
Shift set temperature / +2C, +1C,
NORMAL, –1C, –2C
Customized value will be dis-
played
–
AIR INLET MODE
Air inlet mode / AUTO, MANUAL
Customized value will be dis-
played
–
COMPRESSOR MODE
Compressor mode / AUTO,
MANUAL
Customized value will be dis-
played
–
COMPRS/DEF OPER
Compressor / DEF operation
mode / LINK, NORMAL
Customized value will be dis-
played
–
FOOT/DEF MODE
Foot / DEF auto mode / ON, OFF
Customized value will be dis-
played
–
DESTINATION
Destination / DOMEST, USA, EU-
ROPE, AUSTRAL, MIDEAST, NO
INFO
Changes with destination
–
REAR ROOM TEMP
Room temperature sensor (Rear) /
min.: –6.5
°
C (20.3
°
F)
max.: 57.25
°
C (135.05
°
F)
Actual room temperature is dis-
played
Open in the circuit:
–6.5
°
C (20.3
°
F)
Short in the circuit:
57.25
°
C (135.05
°
F)
R–EVAP TEMP
Evaporator temperature sensor /
min.: –29.7
°
C (–21.46
°
F)
max.: 59.55
°
C (139.19
°
F)
Actual evaporator temperature is
displayed
Open in the circuit:
–29.7
°
C (–21.46
°
F)
Short in the circuit:
59.55
°
C (139.19
°
F)
SET TEMP REAR
Set temperature (Rear side) /
min.: 0 max.: 255
Set temperature and displayed
temperature are the same.
–
ESTIMATE TEMP–R
Estimated temperature (Rear side)
/ min.: –200
°
C (–328
°
F)
max.:
200°
C (392
°
F)
Damper is at ”MAX. COOL”:
–200
°
C (–328
°
F)
Damper is at ”MAX. HOT”:
200°
C (392
°
F)
–
A/M DAMP POS–R
Air mix damper position (Rear
side) / min.: –14% max.: 113.5%
Damper is at ”MAX. COOL”:
–10.0%
Damper is at ”MAX. HOT”
100.0%
–
A/M DAMP TARG–R
Air mix damper target position
(Rear side) /
min.: –14% max.: 113.5%
Damper is at ”MAX. COOL”:
–10.0%
Damper is at ”MAX. HOT”
100.0%
–
BLOWER LEVEL–R
Blower motor speed level /
min.: Level 0 max.: 31
Increases within a range between
0 and 31 as the speed increases.
–
#CODES
Number of trouble codes /
min.: 0 max.: 255
Number of DTCs will be displayed
–
ENGINE AND ECT / ALL:
Item
Measurement Item / Display
(Range)
Normal Condition
Diagnostic Note
A/C SIG
A/C signal / ON or OFF
A/C ON: ON
–
A/C MAG CLUTCH
A/C magnet clutch / ON or OFF
A/C magnet clutch ON: ON
–
DI–2316
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2510
2.
ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand–held tester allows the relay, VSV, actuator and so on to oper-
ate without part removal. Performing the ACTIVE TEST as the first step of troubleshooting is one way to
shorten labor time.
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch to the ON position.
(c)
From the display on the tester, perform the ”ACTIVE TEST”.
AIR CONDITIONING:
Item
Test Details / Display (Range)
Diagnostic Note
BLOWER MOTOR
Blower motor / min.: 0 max.: 31
–
AIR MIX DAMP–D
Air mix damper (Driver side) / min.: –14% max.: 113.5%
–
A/I DAMP–LINEAR
Air inlet damper position (Linear) / min.: –14% max.: 113.5%
–
REAR BLOWER
Blower motor (Rear) / min.: 0 max.: 31
–
AIR MIX DAMP–R
Air mix damper (Rear) / min.: –14% max.: 113.5%
–
A/C MAG CLUTCH
A/C magnetic clutch relay / OFF, ON
–
DEFOGGER RLY–R
Defogger relay (Rear) / OFF, ON
–
DI3F1–09
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
DI–2317
2511
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below (Proceed to the page given for that circuit.)
DTC No.
(See page)
Detection Item
Trouble Area
Memory
00
Normal
–
–
11 *
1
)
Front room temperature sensor circuit
Front room temp. sensor
Harness or connector between front room temp. sensor and
integration control and panel
Integration control and panel
(8.5 min. or more)
12
*2
)
Ambient temperature sensor circuit
Ambient temp. sensor
Harness or connector between ambient temp. sensor and
integration control and panel
Integration control and panel
(8.5 min. or more)
13
)
Front evaporator temperature sensor
circuit
Front evaporator temp. sensor
Harness or connector between front evaporator temp. sen-
sor and integration control and panel
Integration control and panel
(8.5 min. or more)
14
)
Engine coolant temperature sensor cir-
cuit
Engine coolant temp. sensor
Harness or connector between engine coolant temp. sensor
and ECM
Harness or connector between ECM and integration control
and panel
Integration control and panel
ECM
–
17
)
Rear evaporator temperature sensor
circuit
Rear evaporator temp. sensor
Harness or connector between rear evaporator temp. sensor
and integration control and panel
Integration control and panel
(8.5 min. or more)
19 *
1
)
Rear room temperature sensor circuit
Rear room temp. sensor
Harness or connector between rear room temp. sensor and
integration control and panel
Integration control and panel
(8.5 min. or more)
21 *
3
Solar sensor circuit (Open)
Solar sensor
Harness or connector between solar sensor and integration
–
21 *
3
)
Solar sensor circuit (Short)
Harness or connector between solar sensor and integration
control and panel
Integration control and panel
(8.5 min. or more)
22 *
4
)
All conditions below are detected for 3
sec. or more
(a) Engine speed: 450 rpm or more
(b) Ratio between engine and compres-
sor rpm deviates 20% or more in com-
parison to normal operation.
Compressor drive belt
Compressor lock sensor
Compressor
Harness or connector between compressor lock sensor and
integration control and panel
Integration control and panel
–
23
)
Open in pressure sensor circuit
Abnormal refrigerant pressure
[below 196 kPa (2.0 kgf/cm
2
, 28 psi)
over 3,140 kPa (32.0 kgf/cm
2
, 455 psi)]
Pressure switch
Harness or connector between pressure switch and integra-
tion control and panel
Refrigerant pipe line
Integration control and panel
–
DI–2318
–
DIAGNOSTICS
AIR CONDITIONING SYSTEM
2512
31
)
Front air mix damper position sensor
circuit
Front air mix damper position sensor
Harness or connector between front air mix damper position
sensor and integration control and panel
Integration control and panel
(1 min. or more)
32
)
Air inlet damper position sensor circuit
Air inlet damper position sensor
Harness or connector between air inlet damper position
sensor and integration control and panel
Integration control and panel
(1 min. or more)
37
)
Water valve damper position sensor cir-
cuit
Water valve damper position sensor
Harness or connector between water valve damper position
sensor and integration control and panel
Integration control and panel
(1 min. or more)
41
)
Front air mix damper control servomotor
circuit
Front air mix damper control servomotor
Front air mix damper position sensor
Harness or connector between integration control and panel
and front air mix damper control servomotor
Harness or connector between air mix position sensor and
integration control and panel front
Integration control and panel
(15 sec. or more)
42
)
Air inlet damper control servomotor cir-
cuit
Air inlet damper control servomotor
Air inlet damper position sensor
Harness or connector between air inlet damper control ser-
vomotor and integration control and panel
Harness or connector between air inlet damper position
sensor and integration control and panel
Integration control and panel
(15 sec. or more)
47
)
Water valve damper control servomotor
circuit
Water valve damper control servomotor
Water valve damper position sensor
Harness or connector between water valve damper control
servomotor and integration control and panel
Harness or connector between water valve damper position
sensor and integration control and panel
Integration control and panel
(15 sec. or more)
HINT:
*1
If the room temp. is approx. –20
°
C (–4
°
F) or lower, this DTC may be output even though the system
is normal.
*2
If the ambient temp. is approx. –50
°
C (–58
°
F) or lower, DTC 12 may be output even though the sys-
tem is normal.
*
3
If the check is being performed in a dark place, DTC 21 (solar sensor circuit abnormal) could be dis-
played. In this case, perform DTC check again while illuminating the solar sensor with an inspection
light etc.. If DTC 21 is still displayed, there could be trouble in the solar sensor circuit.
*
4
Compressor lock (DTC 22) is indicated only for a current malfunction. (See page
)
To confirm DTC 22, preform the following steps.
(1)
With the engine ON, enter the DTC check mode.
(2)
Press the R/F switch to enter actuator check mode, and set the operation to Step No. 3.
(3)
Press the AUTO switch to return to DTC check mode.
(4)
The DTC is displayed after approx. 3 sec.
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