TROUBLESHOOTING
F–237
F
L8, LF (Intensely hot area) engine models
Cooling fan system operation (at idle)
1. Connect WDS or equivalent to DLC-2.
2. Verify that ECT PID is below cooling fan operating temperature.
3. Verify that the A/C switch and fan switch are off.
4. Start the engine and let it at idle.
5. Verify that the cooling fans fan are not operating.
•
If the cooling fan is operating low speed, inspect for following:
— Short to GND circuit between PCM terminal 4L and cooling fan relay No.2
— Cooling fan relay No.2 stuck in closed position
•
If the cooling fans are operating high speed, inspect for following:
— DTC for ECT sensor (P0117, P0118)
•
If the cooling fan motor No.1 is not operating and cooling fan motor No.2 is operating, inspect for following:
— Short to GND circuit between PCM terminal 4F and cooling fan relay No.1
— Cooling fan relay No.1 stuck ON
— Short to GND circuit between PCM terminal 4B and cooling fan relay No.3
— Cooling fan relay No.3 stuck ON
6. Start the engine.
7. Verify that the cooling fans are operating low speed when ECT PID is
above 100
°
C {212
°
F}
.
•
If the cooling fan motor No.1 does not operate, perform the following:
1. Select FAN3 PID.
2. Operate cooling fan relay No.2 by sending ON command.
3. Inspect the operation sound is heard from cooling fan relay No.2.
— If the operation sound is heard, inspect wiring harnesses, connectors and cooling fan motor No.1.
— If the operation sound is not heard, inspect cooling fan relay No.2 and open circuit between PCM
terminal 4L and cooling fan relay No.2 wiring harness and connectors.
•
Inspect the cooling fan is operating high speed, inspect the following:
— Short to GND circuit between PCM terminal 4F and cooling fan relay No.1/cooling fan relay No.4.
8. Turn A/C switch and fan switch are on.
9. Verify that the ACCS PID is ON.
•
If the ACCS PID is not ON, inspect for following:
— A/C switch
— Fan switch
— Refrigerant pressure switch
— Open circuit PCM 1AC related harnesses and connectors
10. Access the COLP PID.
11. Verify that the cooling fan motor No.1 is operating high speed and cooling fan motor No.2 is operating low
speed, while the COLP PID is ON.
•
If the cooling fan motor No.1 does not operate high speed, perform the following:
1. Select FAN1 PID.
2. Operate cooling fan relay No.1 and cooling fan relay No.4 by sending ON command.
Engine condition
Cooling fan
relay No.2
Cooling fan
relay No.4
Cooling fan
relay No.1
Cooling fan
relay No.3
Cooling fan
motor No.1
Cooling fan
motor No.2
Engine coolant temperature below
100
°
C {212
°
F}
OFF
OFF
OFF
OFF
OFF
OFF
Engine coolant temperature above
100
°
C {212
°
F} (until below 97
°
C
{208
°
F})
ON
OFF
OFF
OFF
Low speed
OFF
Engine coolant temperature above
108
°
C {233
°
F} (until below 105
°
C
{208
°
F})
ON
ON
ON
ON
High speed
High speed
A/C and fan
switches are
on.
Refrigerant pressure
switch (middle
pressure) is off.
ON
OFF
OFF
ON
Low speed
OFF
Refrigerant pressure
switch (middle
pressure) is on.
ON
ON
ON
OFF
High speed
Low speed
ECT sensor malfunction
ON
ON
ON
ON
High speed
High speed
Содержание 6 2002
Страница 104: ...F 4 LOCATION INDEX End Of Sie FUEL SYSTEM A6E390001006W01 Engine Room Side A6E3912W015...
Страница 151: ...F 36 EXHAUST SYSTEM A6E3914W002...
Страница 312: ...F 182 TROUBLESHOOTING QUICK DIAGNOSTIC CHART A6E398018881W02 A6E3980W001...
Страница 313: ...TROUBLESHOOTING F 183 F A6E3980W002...
Страница 314: ...F 184 TROUBLESHOOTING A6E3980W003...
Страница 315: ...TROUBLESHOOTING F 185 F End Of Sie A6E3980W004...
Страница 410: ...K 3 K...
Страница 411: ...K 4 LOCATION INDEX AUTOMATIC TRANSAXLE LOCATION INDEX A6E560001074W01 LOCATION INDEX A6E5600W001...
Страница 526: ...TROUBLESHOOTING K 115 K QUICK DIAGNOSIS CHART A6E568001030W04 A6E5680W001...
Страница 527: ...K 116 TROUBLESHOOTING End Of Sie A6E5680W002...
Страница 653: ...ON BOARD DIAGNOSTIC ABS TCS P 57 P...
Страница 701: ...TROUBLESHOOTING ABS TCS DYNAMIC STABILITY CONTROL P 105 P Vehicle with ABS TCS A6E6980W002...
Страница 702: ...P 106 TROUBLESHOOTING ABS TCS DYNAMIC STABILITY CONTROL Vehicle with DSC End Of Sie A6E6980W100...
Страница 819: ...OUTSIDE MIRROR S 60 2 THIS PAGE IS INTENTIONALLY LEFT BLANK End Of Sie...
Страница 971: ...T 76 WARNING AND INDICATOR SYSTEM Operating Order A6E8118W009...
Страница 1150: ...U 4 LOCATION INDEX End Of Sie CONTROL SYSTEM A6E850001042W01 L H D A6E8500W003 A6E8500W004...
Страница 1152: ...U 6 LOCATION INDEX R H D A6E8500W005 A6E8500W006...
Страница 1177: ...U 26 BASIC SYSTEM 12 Perform the refrigerant system performance test See U 13 REFRIGERANT SYSTEM PERFORMANCE TEST A6E8516W029...