Page 68 of 3115
I06695
I06696
- AIR CONDITIONINGFRONT COOLING UNIT
AC-25
2750 Author: Date:
2004 LAND CRUISER (RM1071U)
4. REMOVE ANTENNA RELAY
(a) Disconnect the connector.
(b) Remove the 2 screws and antenna relay.
5. REMOVE COOLING UNIT
(a) Disconnect the connector.
(b) Remove the 4 screws, 2 nuts and cooling unit.
Page 75 of 3115
I25155
AC3OX-01
N02832
3
2 1
5 4
1
43
25
AC-94
- AIR CONDITIONINGHEATER MAIN RELAY
2819 Author: Date:
2004 LAND CRUISER (RM1071U)
HEATER MAIN RELAY
INSPECTION
1. REMOVE HEATER MAIN RELAY
Remove the heater main relay.
2. INSPECT HEATER MAIN RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2
3 - 4Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.
3. INSTALL HEATER MAIN RELAY
Page 76 of 3115
I25040
Relay BlockJunction Block
(Built-in Relay)AC1LY-03
I25183
Engine Room J/B
63
65
57 AC-96
- AIR CONDITIONINGMAGNETIC CLUTCH RELAY
2821 Author: Date:
2004 LAND CRUISER (RM1071U)
MAGNETIC CLUTCH RELAY
INSPECTION
HINT:
The magnetic clutch relay is built in the engine room junction
block. Since the relay is constructed with a relay block that is in
the junction block as a unit, it is impossible to disconnect the
wire harness connecting with the relay block.
If the relay has a malfunction, replace it with the junction block
assembly wire harness together.
1. REMOVE ENGINE ROOM J/B
2. INSPECT MAGNETIC CLUTCH RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant57 - 65Continuity
Apply B+ between
terminals 57 and 65.63 - 65Continuity
If continuity is not as specified, replace the engine room J/B.
3. INSTALL ENGINE ROOM J/B
Page 101 of 3115
I25040
Relay BlockJunction Block
(Built-in Relay)
AC3OY-01
I25183
Engine Room J/B
31 29 3 2
- AIR CONDITIONINGREAR HEATER RELAY
AC-95
2820 Author: Date:
2004 LAND CRUISER (RM1071U)
REAR HEATER RELAY
INSPECTION
HINT:
The rear heater relay is built in the engine room junction block.
Since the relay is constructed with a relay block that is in the
junction block as a unit, it is impossible to disconnect the wire
harness connecting with the relay block.
If the relay has a malfunction, replace it with the junction block
assembly wire harness together.
1. REMOVE ENGINE ROOM J/B
2. INSPECT REAR HEATER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant29 - 31Continuity
Apply B+ between
terminals 29 and 31.2 - 3Continuity
If continuity is not as specified, replace the engine room J/B.
3. INSTALL ENGINE ROOM J/B
Page 153 of 3115
I06145
Wire Harness Side BE-176
- BODY ELECTRICALANTENNA
2549 Author: Date:
2004 LAND CRUISER (RM1071U)
3. Auto Antenna Models:
INSPECT ANTENNA MOTOR CONTROL RELAY CIR-
CUIT
Disconnect the connector from the relay and inspect the con-
nector on wire harness side, as shown in the chart on the next
page.
Tester connectionConditionSpecified condition
1 - GroundAntenna ºUPº switch OFFNo continuity
1 - GroundAntenna ºUPº switch ONContinuity
5 - GroundConstantContinuity
9 - GroundAntenna ºDOWNº switch OFFNo continuity
9 - GroundAntenna ºDOWNº switch ONContinuity
4 - GroundConstantBattery positive voltage
7 - GroundIgnition switch ACC or LOCKNo voltage
7 - GroundIgnition switch ONBattery positive voltage
17 - GroundIgnition switch LOCKNo voltage
17 - GroundIgnition switch ACC or ONBattery positive voltage
If circuit is as specified, replace the relay.
Page 212 of 3115
MET Fuse Light Control Switch Flasher Relay
ABS, TRC, VSC ECU ABS, TRC, VSC ECU Drive Monitor H/L R-HI Fuse Body ECU
ABS, TRC, VSC ECU
ABS & BA & TRAC & VSC Actuator ECM
ABS, TRC, VSC ECU
Airbag ECU
Oil Pressure Sender Gauge Airbag ECU Body ECUWiring connector side No.107 6
19 18 175 3
12
20 15
16
17
18
19
7 4 1
C14 C13 C12
11
Gateway ECU
ECM Engine Ground
Main Fuel Sender Gauge
7
19
201
2
4
C15Key Unlock Warning Switch 9CTR DIFF Switch 14
Drive Monitor 16 10 ECM
Body (Door Courtesy Switch Signal) 10Flasher Relay 4
ABS, TRC, VSC ECU
ABS, TRC, VSC ECU
ABS, TRC, VSC ECU
GAUGE1 Fuse
ECU-B2 Fuse
ACC Fuse
DOME Fuse
Speed Sensor 11
12
13
14
15Main Fuel Sender Gauge
Light Control Rheostat 6 Main Fuel Sender GaugeBody Ground 9
Speed Control Unit 16PANEL Fuse 8
11 Driver Seat Belt Buckle Switch
- BODY ELECTRICALCOMBINATION METER
BE-61
2434 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 227 of 3115
BE2EE-01
I25790
w/o Navigation System:
w/ Navigation System:
ABC
I01200
2 1
35
2 5
1 3
- BODY ELECTRICALDEFOGGER SYSTEM
BE-75
2448 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT DEFOGGER SWITCH CIRCUIT
Disconnect the connector from the panel switch and inspect the
connector on wire harness side, as shown in the chart.
w/ Navigation:
Tester connectionConditionSpecified condition
B12 (GND) - GroundConstantContinuity
B11 (+B) - GroundConstantBattery positive voltage
B22 (IG) - GroundIgnition switch LOCK or ACCNo voltage
B22 (IG) - GroundIgnition switch ONBattery positive voltage
A10 (RDFGR) - GroundConstantBattery positive voltage
w/o Navigation:
Tester connectionConditionSpecified condition
16 (GND) - GroundConstantContinuity
8 (IG) - GroundIgnition switch LOCK or ACCNo voltage
8 (IG) - GroundIgnition switch ONBattery positive voltage
2 (DEFC) - GroundConstantBattery positive voltage
If the circuit is not as specified, replace the switch.
2. INSPECT DEFOGGER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.
Page 228 of 3115
I25040
Built in relayExcept built in relay
I01291
Tester Probe
Tin FoilHeat Wire
I01292
At Center
I01293
0 Volts
Broken
WireSeveral
Volts
Battery
side Ground sideFoil strip
BE-76
- BODY ELECTRICALDEFOGGER SYSTEM
2449 Author: Date:
2004 LAND CRUISER (RM1071U)
3. INSPECT ENGINE ROOM R/B RELAY CIRCUIT (See
Pase BE-15)
HINT:
The mirror heater relay is built in engine room junction block.
Also the relay is constructed with a relay block that is in the junc-
tion block as a unit. To disconnect the wire harness connecting
with relay block is impossible. If the relay has a malfunction, re-
place it with junction block assembly wire harness together.
4. INSPECT DEFOGGER WIRE
NOTICE:
When cleaning the glass, use a soft, dry cloth, and wipe the
glass in the direction of the wire. Take care not to damage
the wires.
Do not use detergents or glass cleaners with abrasive in-
gredients.
When measuring voltage, wrap a piece of tin foil around the
tip of the negative probe and press the foil against the wire
with your finger, as shown.
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
(c) Inspect the voltage at the center of each heat wire, as
shown.
VoltageCriteria
Approx. 5VOkay (No break in wire)
Approx. 10V or 0VBroken wire
HINT:
If there is approximately 10 V, the wire is broken between the
center of the wire and the positive (+) end. If there is no voltage,
the wire is broken between the center of the wire and ground.
(d) Place the voltmeter positive (+) lead against the defogger
wire on the battery side.
(e) Place the voltmeter negative (-) lead with the foil strip
against the wire on the ground side.
(f) Slide the positive (+) lead from battery to ground side.
(g) The point where the voltmeter deflects from several V to
zero V is the place where the defogger wire is broken.
HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but voltage gradually increases
to about 12 V as the meter probe moves to the other end.
