Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 120

6E–84

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

ECM Diagnostic Trouble Codes

Flash

Code

Code

Symptom

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM Pin

No.

Related

Multiple

DTC

65

P0100

7

ON

Mass Air Flow (MAF) Sensor Voltage
Supply Circuit High Input

MAF sensor power supply voltage
is more than 5.2V.

ECM uses mass air flow
1600mg/strk & EGR 10% condi-
tions as substitute.

MAF sensor power supply voltage is
below 5.2V.

1. Sensor power supply circuit short
to battery voltage circuit.
2. MAF sensor malfunction.
3. ECM malfunction.

83

-

9

ON

Mass Air Flow (MAF) Sensor Voltage
Supply Circuit Low Input

MAF sensor power supply voltage
is below 4.6V.

MAF sensor power supply voltage is
more than 4.6V.

1. Sensor power supply circuit short
to ground circuit.
2. MAF sensor malfunction.
3. ECM malfunction.

83

-

B

ON

Mass Air Flow (MAF) Sensor Output
Circuit Low Input

1. Engine speed is between
600rpm and 5000rpm.
2. MAF sensor output is below -
33.7mg/strk.

MAF sensor output is more than -
27.4mg/strk.

1. Sensor power supply circuit open
circuit.
2. Sensor signal circuit open or short
to ground circuit.
3. Sensor heater harness open cir-
cuit.
4. Poor connector connection.
5. MAF sensor malfunction.
6. ECM malfunction.

83/88

P0110(1)

C

ON

Mass Air Flow (MAF) Sensor Output
Circuit High Input

1. Engine speed is between
600rpm and 5000rpm.
2. MAF sensor output is more than
1784mg/strk.

MAF sensor output is below 1784mg/
strk.

1. Sensor signal circuit short to volt-
age circuit.
2. Sensor ground circuit open or short
to voltage circuit.
3. MAF sensor malfunction.
4. ECM malfunction.

88/ 92

P0110(1)

23

P0110

1

ON

Intake Air Temperature (IAT) Sensor
Circuit High Input

IAT sensor output voltage is more
than 4.7V.

ECM use 0°C conditions as sub-
stitute.

IAT sensor output voltage is below 4.7V. 1. Sensor signal circuit open or short

to voltage circuit.
2. Sensor ground circuit open or short
to voltage circuit.
3. Poor connector connection
4. IAT sensor malfunction.
5. ECM malfunction.

84/92

P0100(B)/

P0100(C)

2

ON

Intake Air Temperature (IAT) Sensor
Circuit Low Input

IAT sensor output voltage is below
0.3V.

IAT sensor output voltage is more than
0.3V.

1. Sensor signal circuit short to
ground circuit.
2. IAT sensor malfunction.
3. ECM malfunction.

84

-

14

P0115

1

ON

Engine Coolant Temperature (ECT)
Sensor Circuit High Input

ECT sensor output voltage is more
than 4.7V.

1. ECM uses fuel temperature as
substitute.
2. ECM uses 60°C condition for
injection timing control.
3. ECM uses -15°C condition for
glow time control.

ECT sensor output voltage is below
4.7V.

1. Sensor signal circuit open or short
to voltage circuit.
2. Sensor ground circuit open or short
to voltage circuit.
3. Poor connector connection
4. ECT sensor malfunction.
5. ECM malfunction.

89/93

-

2

ON

Engine Coolant Temperature (ECT)
Sensor Circuit Low Input

ECT sensor output voltage is
below 0.3V.

ECT sensor output voltage is more than
0.3V.

1. Sensor signal circuit short to
ground circuit.
2. ECT sensor malfunction.
3. ECM malfunction.

89

-

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

6E–85

15

P0180

B

ON

Fuel Temperature Sensor Circuit
Range/Performance

FT sensor output is high tempera-
ture (more than 150°C) or low tem-
perature (below -40°C).

The ECM use 75°C conditions as
substitute.

FT sensor output is correct temperature
range between 150°C and -40°C.

1. ECM malfunction.
2. PSG (pump control unit) malfunc-
tion.

-

-

52

P0215

A

ON at

next
igni-

tion

cycle

Fuel Cutoff Solenoid Valve Malfunc-
tion

1. Ignition key switch off.
2. Engine speed is below
1500rpm.
3. Vehicle speed is below 1.5km/h.
4. PSG (pump control unit) recog-
nizes MAB (fuel cutoff solenoid
valve) signal from the ECM, but
the MAB could not operate.

1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.

No recovery until condition match in the
next ignition key cycle.

1. PSG (pump control unit) malfunc-
tion.
2. MAB (fuel cutoff solenoid valve)
malfunction.

-

-

B

ON

Fuel Cutoff Solenoid Valve Circuit
High Input

ECM does not command MAB
(fuel cutoff solenoid valve) signal
to the PSG (pump control unit), but
PSG detected MAB signal line cir-
cuit is high level.

Engine does not start.

No recovery.

1. MAB (fuel cutoff solenoid valve)
signal circuit short to voltage circuit.
2. PSG (pump control unit) malfunc-
tion.

105

-

C

ON

Fuel Cutoff Solenoid Valve Always
Active

1. Ignition key switch off.
2. Engine speed is below
1500rpm.
3. Vehicle speed is below 1.5km/h.
4. PSG (pump control unit) does
not recognize MAB (fuel cutoff
solenoid valve) signal from the
ECM.

1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.

No recovery until condition match in the
next ignition key cycle.

1. MAB (fuel cutoff solenoid valve)
signal circuit open or short to ground
circuit.
2. PSG (pump control unit) malfunc-
tion.

105

-

D

ON

Fuel Cutoff Solenoid Valve Malfunc-
tion

1. Ignition key switch off.
2. CAN controller does not operate
Bus-off.

No fail-safe function.

1. ECM malfunction.
2. PSG (pump control unit) malfunc-
tion.

-

-

54

P0216

A

ON

Injection Timing Control Circuit Mal-
function (Timer Deviation)

1. Engine speed is more than
700rpm.
2. Fuel injection quantity is more
than 4mg/stk.
3. Deviation of actual injection tim-
ing and desired injection timing is
more than +3°CA or -6°CA for 8
seconds.

Fuel injection quantity is
reduced.

Deviation of actual injection timing and
desired injection timing is below +3°CA
or -6°CA for 8 seconds.

1. Timing control valve malfunction.
2. Timer piston sticking.
3. Pump camshaft speed sensor mal-
function.

-

-

B

ON

Injection Timing Control Circuit Mal-
function (Timer Fluctuation)

1. Engine speed is more than
2014rpm.
2. Fluctuation of actual injection
timing is more than ±5.2°CA.

1. Engine speed is more than 2014rpm.
2. Fluctuation of actual injection timing is
below ±5.2°CA.

1. Insufficient air bleeding of fuel line.
2. Fuel filter clogging.
3. Timing control valve malfunction.
4. Pump camshaft speed sensor mal-
function.

-

-

Flash

Code

Code

Symptom

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM Pin

No.

Related

Multiple

DTC

6E–86

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

53

P0251

6

ON

Injection Pump Malfunction

1. No pump camshaft speed sen-
sor error.
2. High pressure solenoid valve
control pulse width does not match
with desired fuel injection quantity.

1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.

No recovery until condition match in the
next ignition key cycle.

1. PSG (pump control unit) malfunc-
tion.
2. Pump camshaft speed sensor mal-
function.

-

-

7

ON

Injection Pump Malfunction

1. No pump camshaft speed sen-
sor error.
2. No CKP sensor error.
3. Difference of engine speed and
doubled pump camshaft speed is
more than 690rpm.

1. No pump camshaft speed sensor
error.
2. No CKP sensor error.
3. Difference of engine speed and dou-
bled pump camshaft speed is below
690rpm.
No recovery until in the next ignition key
cycle.

1. Missing CKP sensor pulses.
2. Electrical interference.
3. Magnetic interference.
4. PSG (pump control unit) malfunc-
tion.

91

-

9

ON

Injection Pump Malfunction

No pump map programmed in the
PSG (pump control unit) or PSG
malfunction.

No recovery until condition match in the
next ignition key cycle.

PSG (pump control unit) malfunction.

-

-

A

ON

Injection Pump Malfunction

EEPROM or A/D converter mal-
function in the PSG (pump control
unit).

Fuel injection quantity is
reduced.

EEPROM or A/D converter no malfunc-
tion in the PSG (pump control unit).
No recovery until in the next ignition key
cycle.

PSG (pump control unit) malfunction.

-

-

B

ON

Injection Pump Malfunction

PSG (pump control unit) recog-
nized high pressure solenoid valve
drive circuit error.

No fail-safe function.

No recovery until condition match in the
next ignition key cycle.

PSG (pump control unit) malfunction.

-

-

D

ON

Injection Pump Malfunction

PSG (pump control unit) could not
measure the high pressure sole-
noid valve drive voltage.

PSG (pump control unit) malfunction.

-

-

E

ON

Injection Pump Malfunction

ECM could not accept PSG (pump
control unit) message.

1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.

ECM accepts PSG (pump control unit)
message.

1. CAN high circuit open, short to
ground or short to voltage circuit.
2. CAN low circuit open, short to
ground or short to voltage circuit.
3. ECM malfunction.
4. PSG (pump control unit) malfunc-
tion.

99/100

P1650(A)/

P1651(B)

Flash

Code

Code

Symptom

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM Pin

No.

Related

Multiple

DTC

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

6E–87

43

P0335

B

ON

Crankshaft Position Sensor Circuit
Malfunction

1. Engine speed is more than
665rpm.
2. CKP sensor pulse width error.

When pump camshaft speed
sensor is OK:
ECM uses doubled pump cam-
shaft speed as substitute engine
speed.
When pump camshaft speed
sensor is not OK:
1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.

ECM detects correct CKP pulse width.

During engine run:
1. CKP sensor harness open circuit,
short to ground or short to voltage cir-
cuit.
2. Poor connector connection.
3. CKP sensor malfunction.
4. Pulse sensing gap incorrect.
5. Pulser malfunction.
6. Electrical interference.
7. Magnetic interference.
8. ECM malfunction.

90/ 98/

101

P1335 (A)

D

ON

Crankshaft Position Sensor Circuit
Malfunction

1. No pump camshaft speed sen-
sor error.
2. “Crankshaft Position Sensor Cir-
cuit Malfunction (Symptom Code
B)” is not stored.
3. Engine speed is 0rpm.
4. Doubled pump camshaft speed
is more than 50rpm.

When pump camshaft speed
sensor is OK:
ECM uses doubled pump cam-
shaft speed as substitute engine
speed.
Other than pump camshaft
speed sensor is OK:
Fuel injection quantity is
reduced.

1. Engine speed is more than 0rpm.
2. Doubled pump camshaft speed is
below 100rpm.

During engine crank:
1. CKP sensor harness open circuit,
short to ground or short to voltage cir-
cuit.
2. Poor connector connection.
3. CKP sensor malfunction.
4. Pulse sensing gap incorrect.
5. Pulser malfunction.
6. Electrical interference.
7. Magnetic interference.
8. ECM malfunction.

90/ 98/

101

P1135 (A)

E

ON

Engine Speed Input Circuit Range/
Performance

Engine speed is more than
5700rpm.

When intermittent malfunction:
1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.
When preliminary malfunction:
ECM uses doubled pump cam-
shaft speed as substitute engine
speed.

Engine speed is below 5700rpm.

1. Engine over-running.
2. CKP sensor malfunction.
3. Pulser malfunction.
4. ECM malfunction.

90/ 98/

101

-

66

P0380

4

ON

Glow Relay Circuit Voltage Low

Glow relay circuit open or short to
ground circuit.

No fail-safe function.

Glow relay circuit is correct condition.

1. Glow relay circuit open or short to
ground circuit.
2. Glow relay malfunction.
3. ECM malfunction.

94

-

8

ON

Glow Relay Circuit Voltage High

Glow relay circuit short to voltage
circuit.

ECM malfunction.

-

-

67

P0381

4

ON

Glow Plug Indicator Circuit Voltage
Low

Glow plug indicator circuit open or
short to ground circuit.

No fail-safe function.

Glow plug indicator circuit is correct con-
dition.

1. Glow plug indicator circuit open or
short to ground circuit.
2. Glow plug indicator lamp malfunc-
tion.
3. ECM malfunction.

43

-

8

ON

Glow Plug Indicator Circuit Voltage
High

Glow plug indicator circuit short to
voltage circuit.

ECM malfunction.

-

-

Flash

Code

Code

Symptom

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM Pin

No.

Related

Multiple

DTC