1996 TOYOTA LAND CRUISER Ect

Z19533
1
2
3
4
5 12
3
4
5
AC2SE−03
AC−64
−
AIR CONDITIONING HEATER MAIN RELAY
1391
Author: Date:
1996 LAND CRUISER (RM451U)
HEATER MAIN RELAY
INSPECTION
INSPECT HEATER MAIN RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 − 3
2 − 4Continuity
Apply B+ between
terminals 3 and 5.4 − 5Continuity
If continuity is not as specified, replace the relay.
BE1850 BElS44
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Z09804
1
23
4
5
6
1
3
6 2
4
AC2SF−01
−
AIR CONDITIONING REAR HEATER RELAY
AC−65
1392
Author: Date:
1996 LAND CRUISER (RM451U)
REAR HEATER RELAY
INSPECTION
INSPECT REAR HEATER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant2 − 6
1 − 3Continuity
Apply B+ between
terminals 2 and 6.1 − 4Continuity
If continuity is not as specified, replace the relay.
H-8-2BE1844
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Z09507
1
2
3
4 412
4
3AC2SG−01
AC−66
−
AIR CONDITIONING MAGNETIC CLUTCH RELAY
1393
Author: Date:
1996 LAND CRUISER (RM451U)
MAGNETIC CLUTCH RELAY
INSPECTION
INSPECT MAGNETIC CLUTCH RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 − 3 Continuity
Apply B+ between
terminals 1 and 3.2 − 4Continuity
If continuity is not as specified, replace the relay.BE1647BE1841
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N06549
AC2SH−01
V02084OFFON
103 °C (217° F)
108
°C (226° F)
−
AIR CONDITIONING ENGINE COOLANT TEMPERATURE (ECT) CUT
RELAYAC−67
1394
Author: Date:
1996 LAND CRUISER (RM451U)
ENGINE COOLANT
TEMPERATURE (ECT) CUT RELAY
INSPECTION
INSPECT SWITCH CONTINUITY
Check the continuity betweeen terminals of the switch, as
shown in the chart below.
If continuity is not as specified, replace the switch.
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AC2SM−01
AC2717
Connector ”A”
−
AIR CONDITIONING AIR CONDITIONING CONTROL ASSEMBLY
AC−69
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal A −13
and the negative ( −) lead to terminal A−3, then check that the
illuminations light up.
If illuminations do not light up, test the bulb.
2. Air Inlet Control Switch:
INSPECT INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal
A−9 and the negative ( −) lead to terminal A−8.
(b) With the air inlet control button pushed in, check that the FRESH or RECIRC indicator light lights up.
(c) Next, push in the button again, and check that the indica-
tor light goes off and the other indicator light lights up.
AICSwitch
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ModeControlSwitch
2=i=~~~:=i~;=j::;5-H--+__Blower Speed
ControlSwitch
TemperatureControl
Switch Connector
"A"
~~.~r-r""""~~~9&ru7 6ill'O'~5 •U3 2
1
20 19iJl
II1716115a1311121110...... L.....-~
Connector"B"
,...,.....-~~'is"'-"'r"""".~~r"'-&765~'o"~•3ru2I
1&17iJl1615ullJ12IliJllO9L...,..L-,_\-L..,-
Z04530
r
!rfl176~54 3 21~
m2019lI:8171611514131211~
Connector"A"
~e@j
AC2718
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AC2722
Connector ”A”Connector ”B”
AC2723
Connector ”A”
Connector ”B”
AC2722
Connector ”A”
Connector ”B”
AC2723
Connector ”A”
Connector ”B”
AC−70
−
AIR CONDITIONING AIR CONDITIONING CONTROL ASSEMBLY
1996 LAND CRUISER (RM451U)
(d) Then connect the positive (+) lead from the battery to ter-
minal A−13 and check that the indicator dims.
If operation is not as specified, replace the A/C control assem-
bly.
3. Mode Control Switch: INSPECT INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal A−9 and the negative ( −) lead to terminal B−16.
(b) Push each of the mode buttons in and check that their in- dicator light lights up.
(c) Then connect the positive (+) lead from the battery to ter-
minal A−13 and check that the indicator dims.
If operation is not as specified, replace the A/C control assem-
bly.
4. Blower Speed Control Switch: INSPECT INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal A−9 and the negative ( −) lead to terminal B−16.
(b) Push each of the blower speed control buttons in and check that their indicator light lights up.
(c) Then connect the positive (+) lead from the battery to ter-
minal A−13 and check that the indicator dims.
If operation is not as specified, replace the A/C control assem-
bly.
c
r
1rf1~716[lJ';W5413 211
1\E~g1~171611514[.3]12111~
-r...'onnector"A"(
IeCBI
AC2719
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Z09805
Connector ”A”Connector ”B”
−
AIR CONDITIONING AIR CONDITIONING CONTROL ASSEMBLY
AC−71
1996 LAND CRUISER (RM451U)
5. A/C or DEF Switch:
INSPECT INDICATOR LIGHT OPERATION
(a) Connect the positive (+) lead from the battery to terminal
A−9 and the negative ( −) lead to terminal B−18.
(b) Push the A/C or DEF switch button in and check that the indicator light lights up.
(c) Then, connect the positive (+) lead from the battery to ter-
minal A−13 and check that the indicator dims.
If operation is not as specified, replace the A/C control assem-
bly.
6. INSPECT AIR INLET CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FRESHA8 − A19Continuity
RECIRCA8 − A18Continuity
If continuity is not as specified, replace the A/C control assem-
bly.
7. INSPECT MODE CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FACEA14 − B16Continuity
BI−LEVELA12 − B16Continuity
FOOTA7 − B16Continuity
FOOT −DEFB11 − B16Continuity
DEFB4 − B16Continuity
If continuity is not as specified, replace the A/C control assem-
bly.
8. INSPECT BLOWER SPEED CONTROL SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFFA10 − B16Continuity
LOA1 − B16Continuity
M1B9 − B16Continuity
M2B10 − B16Continuity
HIB13 − B16Continuity
Connector"A"
Connector"B"
Connector"A"
Connector"A"
...-~~IIB1~t•7 ,3 2I
20Itl'17"lIB,,113121110
e-20-2-C
In,•71'fIl';;l1oT~312I1\
[20It..117,,110141131211110II
0-20-2-<:.-18-2-B
AC2726
AC2727
219129
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AC−72
−
AIR CONDITIONING AIR CONDITIONING CONTROL ASSEMBLY
1996 LAND CRUISER (RM451U)
If continuity is not as specified, replace the A/C control assem-
bly.
9. INSPECT A/C OR DEF SWITCH CONTINUITY
Check that there is continuity between terminals B− 6 and B−17
intermittently each time the A/C or DEF switch button pressed.
If continuity is not as specified, replace the A/C control assem-
bly.
10. INSPECT TEMPERATURE CONTROL SWITCH RESIS-
TANCE
(a) Measure resistance between terminals B −1 and B−2.
Standard resistance:
Approx. 3.0 kΩ
(b) Check that the resistance between terminals B −1 and
B−3 increases from 0 to approx. 3.0 k Ω when the switch
knob is turned from COOL to HOT.
If operation is not as specified, replace the A/C control assem-
bly.
e·18·2·B
e-18-2-B
Connector"B"
!Ie7615[ll'O'H(13IU2In
~1817161151(113121111JlIO'Jl
Connector"B"
N06436
N06436
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