Lexus RX300 (MCU15). Manual — part 191
B04398
No.1 Water
Temperature Switch
CO15V–01
P01924
Ohmmeter
B04397
No.2 Water
Temperature
Switch
P06722
Ohmmeter
–
COOLING
WATER TEMPERATURE SWITCH
CO–33
LEXUS RX300 (RM785E)
WATER TEMPERATURE SWITCH
INSPECTION
1.
DRAIN ENGINE COOLANT
2.
INSPECT NO.1 WATER TEMPERATURE SWITCH
(a)
Remove the No.1 water temperature switch.
(b)
Inspect the No.1 water temperature switch.
(1)
Using an ohmmeter, check that there is continuity
between the terminals when the coolant tempera-
ture is above 98
°C (208°F).
If there is no continuity, replace the switch.
(2)
Check that there is no continuity, between the termi-
nals when the coolant temperature is below 88
°C
(190
°F).
If there is continuity, replace the switch.
(c)
Reinstall the No.1 water temperature switch.
3.
INSPECT NO.2 WATER TEMPERATURE SWITCH
(a)
Remove the No.2 water temperature switch.
(b)
Inspect the No.2 water temperature switch.
(1)
Using an ohmmeter, check that there is continuity
between terminals when the coolant temperature is
above 94
°C (201°F).
If there is no continuity, replace the switch.
(2)
Check that there is no continuity between the termi-
nals when the coolant temperature is below 83
°C
(181
°F).
If there is continuity, replace the switch.
(c)
Reinstall the No.2 water temperature switch.
4.
REFILL ENGINE COOLANT
5.
START ENGINE AND CHECK FOR COOLANT LEAKS
B04229
No.1 Cooling
Fan Relay
CO08H–02
A05743
Ohmmeter
1
5
3
2
No Continuity
Continuity
Ohmmeter
A05744
Continuity
Ohmmeter
5
1
3
2
Battery
B04230
No.2 Cooling
Fan Relay
A05745
Ohmmeter
Continuity
Ohmmeter
No Continuity
Continuity
4
1
3
2
Ohmmeter
5
CO–34
–
COOLING
COOLING FAN RELAY
LEXUS RX300 (RM785E)
COOLING FAN RELAY
INSPECTION
1.
INSPECT NO.1 COOLING FAN RELAY
(a)
Remove the No.1 cooling fan relay. (Marking: FAN NO.1)
(b)
Inspect the No.1 cooling fan relay continuity.
(1)
Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
(2)
Check that there is no continuity between terminals
1 and 2.
If there is continuity, replace the relay.
(c)
Inspect the No.1 cooling fan relay operation.
(1)
Apply battery voltage across terminals 3 and 5.
(2)
Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(d)
Install the No.1 cooling fan relay.
2.
INSPECT NO.2 COOLING FAN RELAY
(a)
Remove the No.2 cooling fan relay. (Marking: FAN NO.2)
(b)
Inspect the No.2 cooling fan relay continuity.
(1)
Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
(2)
Check that there is continuity between terminals 2
and 4.
If there is no continuity, replace the relay.
(3)
Check that there is no continuity between terminals
1 and 2.
If there is continuity, replace the relay.
A05746
Ohmmeter
4
Ohmmeter
Battery
Continuity
No Continuity
1
2
3
5
4
B04231
No.3 Cooling
Fan Relay
A05743
Ohmmeter
1
5
3
2
No Continuity
Continuity
Ohmmeter
A05744
Continuity
Ohmmeter
5
1
3
2
Battery
–
COOLING
COOLING FAN RELAY
CO–35
LEXUS RX300 (RM785E)
(c)
Inspect the No.2 cooling fan relay operation.
(1)
Apply battery voltage across terminals 3 and 5.
(2)
Using an ohmmeter, check that there is no continu-
ity between terminals 2 and 4.
If there is continuity, replace the relay.
(3)
Check that there is continuity between terminals 1
and 2.
If there is no continuity, replace the relay.
(d)
Install the No.2 cooling fan relay.
3.
INSPECT NO.3 COOLING FAN RELAY
(a)
Remove the No.3 cooling fan relay. (Marking: FAN NO.3)
(b)
Inspect the No.3 cooling fan relay continuity.
(1)
Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
(2)
Check that there is no continuity between terminals
1 and 2.
If there is continuity, replace the relay.
(c)
Inspect the No.3 cooling fan relay operation.
(1)
Apply battery voltage across terminals 3 and 5.
(2)
Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(d)
Install the No.3 cooling fan relay.
DIAGNOSTICS
ENGINE
DI–1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–1
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–2
. . .
PRE–CHECK
DI–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–14
. . . . . .
PARTS LOCATION
DI–18
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–19
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–21
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–22
. . . . . . . . . . . . . . . . . . . . .
AUTOMATIC TRANSAXLE
DI–142
. . . . . . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–142
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–143
. . .
PRE–CHECK
DI–144
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–155
. . . . . .
PARTS LOCATION
DI–157
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–158
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–160
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–163
. . . . . . . . . . . . . . . . . . . . .
ABS & BA & TRC & VSC SYSTEM
DI–203
. . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–203
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–204
. . .
PRE–CHECK
DI–205
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–213
. . . . . .
PARTS LOCATION
DI–216
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–217
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–220
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–222
. . . . . . . . . . . . . . . . . . . . .
SUPPLEMENTAL RESTRAINT SYSTEM
DI–303
. . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–303
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–304
. . .
PRE–CHECK
DI–305
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–311
. . . . . .
PARTS LOCATION
DI–314
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–315
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–317
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–318
. . . . . . . . . . . . . . . . . . . . .
THEFT DETERRENT SYSTEM
DI–443
. . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–443
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–444
. . .
PRE–CHECK
DI–445
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS LOCATION
DI–450
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–451
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–452
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–453
. . . . . . . . . . . . . . . . . . . . .
CRUISE CONTROL SYSTEM
DI–472
. . . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–472
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–473
. . .
PRE–CHECK
DI–474
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–479
. . . . . .
PARTS LOCATION
DI–480
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–481
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–483
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–484
. . . . . . . . . . . . . . . . . . . . .
ENGINE IMMOBILISER SYSTEM
DI–520
. . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–520
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–521
. . .
PRE–CHECK
DI–522
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART
DI–525
. . . . . .
PARTS LOCATION
DI–526
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–527
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–528
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–529
. . . . . . . . . . . . . . . . . . . . .
COMBINATION METER SYSTEM
DI–537
. . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–537
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–538
. . .
PROBLEM SYMPTOMS TABLE
DI–539
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–541
. . . . . . . . . . . . . . . . . . . . .
SLIDING ROOF SYSTEM
DI–553
. . . . . . . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–553
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–554
. . .
PARTS LOCATION
DI–555
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–556
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–557
. . . . . . . . . . . . .
CIRCUIT INSPECTION
DI–558
. . . . . . . . . . . . . . . . . . . . .
BODY CONTROL SYSTEM
DI–564
. . . . . . . . . . . . . . .
HOW TO PROCEED WITH
TROUBLESHOOTING
DI–564
. . . . . . . . . . . . . . . . . . . .
CUSTOMER PROBLEM ANALYSIS CHECK
DI–565
. . .
PARTS LOCATION
DI–566
. . . . . . . . . . . . . . . . . . . . . . . . .
TERMINALS OF ECU
DI–567
. . . . . . . . . . . . . . . . . . . . . .
PROBLEM SYMPTOMS TABLE
DI–570
. . . . . . . . . . . . .
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст