Isuzu N-Series. Manual — part 429
6E-52 EMISSION AND ELECTRICAL DIAGNOSIS
Resistance value
Notice:
Resistance value is difference according to the temperature of temperature sensor.
Inspection Point
Resistance
Value
Temperature
on sensor
Reference
Connector
Pin No.
3 pin Black
1
←→ 3
∞
—
Thermistor for ENGINE
←→ Thermistor for meter
1
←→ 2
2.5 (k
Ω)
20
°C (68°F)
Thermistor for ENGINE
247 (
Ω)
90
°C (194°F)
1
←→ Body
∞
—
Thermistor for ENGINE
←→ Body
2
←→ 3
∞
—
Thermistor for ENGINE
←→ Thermistor for meter
3
←→ Body
146.6 (
Ω)
60
°C (140°F) Thermistor for meter ENGINE
2
←→ Body
∞
—
Thermistor for ECM
←→ Body
Step
Action
Value
YES
NO
1
Was the “on-board diagnostic (OBD) system
check” performed?
—
Go to self diag
system check
2
1. Ignition “OFF”
2. Disconnect the ECT sensor.
3. Ignition “ON”, Engine “OFF”
4. See scan Tool Display and Ignore trouble
code 13.
Does code 14 still remain faulty?
—
3
1. Ignition “OFF”
2. Check Connector ECT Sensor Harness
for interterminal short.
3. Repair if necessary.
Was ECT Sensor connector shorted?
—
4
1. Ignition “OFF”
2. Check the ECM connector terminal short.
3. Repair if necessary.
Was ECM terminal shorted?
—
5
1. Disconnect the ECM.
2. Check if ECT sensor signal circuit for a
short to ground or a short to ground cir-
cuit.
3. Repair if necessary.
Is ECT sensor signal circuit shorted to
ground?
—
6
1. Ignition “OFF”
2. Replace the ECT Sensor.
Is the action complete?
—
—
7
1. Replace the ECM.
Is the action complete?
—
—
EMISSION AND ELECTRICAL DIAGNOSIS 6E-53
8
1. Reconnect all the connectors removed.
2. Ignition “ON”, Engine “OFF”
Is DTC 14 all right under Scan Tool Check?
—
9
Is any current trouble other than DTC 14 dis-
played by scan tool?
—
Go to trouble code
section
Trouble code clear
Step
Action
Value
YES
NO
6E-54 EMISSION AND ELECTRICAL DIAGNOSIS
DTC-P21 Rack Sensor Circuit Low Voltage
N6A1167E
EMISSION AND ELECTRICAL DIAGNOSIS 6E-55
Location of Rack Sensor Connector
Connector Name of Rack Sensor
Notice:
Mark “___” on connector which is plugged, therefore,
should be confirmed to be played.
Relation Between Connector Number and Signal
Name
Legend
1. OSC (red)
3. GND (black)
2. MDL (white)
4. Rack sensor
N6A1168E
Legend
1. Rack sensor connector
2. Natural 3 pin
N6A1169E
Connector
No
Signal
Wire color
1
Rack sensor (OSC)
R
2
Rack sensor (MDL)
W
3
Rack sensor (GND)
B
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст