Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 25

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

6E–95

53

P0251

6

ON

Injection Pump Malfunction

1. No pump camshaft speed
sensor 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) mal-
function.
2. Pump camshaft speed sensor
malfunction.

-

-

7

ON

Injection Pump Malfunction

1. No pump camshaft speed
sensor error.
2. No CKP sensor error.
3. Difference of engine speed
and doubled pump camshaft
speed is more than 720rpm
(4JA1-TC) or 690rpm (4JH1-
TC).

1. No pump camshaft speed sensor
error.
2. No CKP sensor error.
3. Difference of engine speed and
doubled pump camshaft speed is
below 720rpm (4JA1-TC) or
690rpm (4JH1-TC).
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) mal-
function.

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) malfunc-
tion.

-

-

A

ON

Injection Pump Malfunction

EEPROM or A/D converter
malfunction in the PSG (pump
control unit).

Fuel injection quantity is
reduced.

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

PSG (pump control unit) malfunc-
tion.

-

-

B

ON

Injection Pump Malfunction

PSG (pump control unit) rec-
ognized high pressure sole-
noid valve drive circuit error.

No fail-safe function.

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

PSG (pump control unit) malfunc-
tion.

-

-

D

ON

Injection Pump Malfunction

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

PSG (pump control unit) malfunc-
tion.

-

-

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) mal-
function.

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

4JA1

-TC

(MT)

4JH1

-TC

(MT)

4JH1

-TC

(AT)

6E–96

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

43

P0335

B

ON

Crankshaft Position Sensor Cir-
cuit 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
camshaft 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 cir-
cuit, short to ground or short to
voltage circuit.
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 Cir-
cuit Malfunction

1. No pump camshaft speed
sensor error.
2. “Crankshaft Position Sensor
Circuit 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
camshaft 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 cir-
cuit, short to ground or short to
voltage circuit.
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 malfunc-
tion:
1. MAB (fuel cutoff solenoid
valve) is operated.
2. Desired injection quantity
becomes 0mg/strk.
When preliminary malfunc-
tion:
ECM uses doubled pump
camshaft 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 condi-
tion.

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 volt-
age circuit.

ECM malfunction.

-

-

67

P0381

4

ON

Glow Plug Indicator Circuit Volt-
age Low

Glow plug indicator circuit
open or short to ground circuit.

No fail-safe function.

Glow plug indicator circuit is correct
condition.

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

43

-

8

ON

Glow Plug Indicator Circuit Volt-
age 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

4JA1

-TC

(MT)

4JH1

-TC

(MT)

4JH1

-TC

(AT)

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

6E–97

32

P0400

3

ON

Exhaust Gas Recirculation Flow
Excessive Detected

1. Intake air temperature is
between 15°C and 100°C.
2. Engine coolant tempera-
ture is between 55°C and
100°C.
3. Barometric pressure is
between 850hpa and
1100hpa.
4. Small amount of mass air
flow. (Desired mass air flow -
mass air flow is more than
150mg/strk)

Fuel injection quantity is
reduced.

1. Engine speed is between
1500rpm and 3100rpm.
2. Injection quantity is between
8mg/strk and 32mg/strk.
3. Correct amount of mass air flow.

1. EGR valve is stuck at open
position.
2. EGR EVRV malfunction.
3. Air intake is obstructed.
4. Air intake is leaking.
5. MAF sensor malfunction.
6. ECM malfunction.

88/97

-

-

-

4

ON

Exhaust Gas Recirculation Circuit
Short to Ground or Open Circuit

EGR EVRV circuit open or
short to ground circuit.

Fuel injection quantity is
reduced and EGR EVRV
10% conditions as substitute.

EGR EVRV circuit is correct condi-
tion.

1. EGR EVRV circuit open or
short to ground circuit.
2. EGR EVRV malfunction.
3. ECM malfunction.

97

-

-

-

5

ON

Exhaust Gas Recirculation Flow
Insufficient Detected

1. Intake air temperature is
between 15°C and 100°C.
2. Engine coolant tempera-
ture is between 55°C and
100°C.
3. Barometric pressure is
between 850hpa and
1100hpa.
4. Large mount of mass air
flow. (Desired mass air flow -
mass air flow is below 150 mg/
strk)

Fuel injection quantity is
reduced.

1. Engine speed is between
1500rpm and 3100rpm.
2. Injection quantity is between
8mg/strk and 32mg/strk.
3. Correct amount of mass air flow.

1. EGR valve is stuck at close
position.
2. EGR valve operating vacuum
hose is clogged or disconnected.
3. EGR EVRV malfunction.
4. MAF sensor signal circuit short
to voltage circuit.
5. MAF sensor malfunction.
6. ECM malfunction.

88/97

-

-

-

8

ON

Exhaust Gas Recirculation Circuit
Short to Battery

EGR EVRV circuit short to
voltage circuit.

Fuel injection quantity is
reduced & EGR EVRV 10%
conditions as substitute.

EGR EVRV circuit is correct condi-
tion.

1. EGR EVRV circuit short to volt-
age circuit.
2. EGR EVRV malfunction.
3. ECM malfunction.

97

-

-

-

24

P0500

1

ON at

next
igni-

tion

cycle

Vehicle Speed Sensor Circuit
High Input

Vehicle speed is more than
200km/h.

ECM uses vehicle speed
5km/h condition as substi-
tute.

Vehicle speed is below 200km/h.

1. VSS signal circuit open, short
to ground or short to voltage cir-
cuit.
2. VSS malfunction.
3. Speed meter malfunction.
4. ECM malfunction.

68

-

A

ON at

next
igni-

tion

cycle

Vehicle Speed Sensor Input Sig-
nal Frequency Too High

Input signal frequency is too
high.

ECM uses vehicle speed
5km/h condition as substi-
tute.

Correct vehicle speed signal fre-
quency.

1. VSS malfunction.
2. Speed meter malfunction.
3. Electrical interference.
4. Magnetic interference.
5. ECM malfunction.

68

-

B

ON at

next
igni-

tion

cycle

Vehicle Speed Sensor Incorrect
Signal

1. Engine speed is more than
3600rpm.
2. Fuel injection quantity is
more than 41mg/stk.
3. Vehicle speed is below
1.5km/h.

Fuel injection quantity is
reduced.

Vehicle speed is more than 1.5km/
h.

1. VSS open circuit, short to
ground or short to voltage.
2. Poor connector connection.
3. VSS malfunction.
4. Speed meter malfunction.
5. ECM malfunction.

68

-

-

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

4JA1

-TC

(MT)

4JH1

-TC

(MT)

4JH1

-TC

(AT)

6E–98

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

35

P0560

1

OFF

System Voltage Too High

System voltage is more than
20V.

ECM uses 9V conditions as
substitute.

System voltage is below 20V.

1. Charge system malfunction.
2. Battery jump start cable mis-
connect.
3. ECM malfunction.

3/39

-

2

OFF

System Voltage Too Low

System voltage is below 7V.

System voltage is more than 7V.

1. Battery power feed harness
open circuit or short to ground
circuit.
2. ECM ground harness open or
poor connection.
3. Poor connector connection.
4. Battery malfunction.
5. Charge system malfunction.
6. ECM malfunction.

3/39

-

A

OFF

System Voltage Malfunction
(PSG)

System voltage of PSG (pump
control unit) is below 4.5V or
more than 27V.

PSG uses default voltage as
substitute.

System voltage of PSG is between
4.5V and 27V.

1. Battery power feed harness
open circuit or short to ground
circuit.
2. PSG (pump control unit)
ground harness open or poor
connection.
3. Poor connector connection.
4. Battery malfunction.
5. Charge system malfunction.
6. Battery jump start cable mis-
connect.
7. PSG (pump control unit) mal-
function.

-

-

18

P0561

A

OFF

System Voltage Circuit Malfunc-
tion

The ECM recognized ignition
switch turn off signal during
ECM is activated.

ECM stops engine.

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

1. Ignition switch circuit open or
short to ground circuit.
2. Poor connector connection.
3. Ignition switch malfunction.
4. ECM malfunction.

39

-

B

ON

System Voltage Circuit Malfunc-
tion

Ignition switch circuit is mal-
function.

1. Ignition switch circuit open or
short to ground circuit.
2. Poor connector connection.
3. Ignition switch malfunction.
4. ECM malfunction.

39

-

-

P0602

-

ECU Programming Error

ECM memory area error.

Engine control disabled.

Memory are is OK.

ECM is not programmed.

-

-

28

P0606

A

ON

ECU Malfunction

Gate Array communication
error.

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

No recovery.

ECM malfunction.

-

-

B

ON

ECU Malfunction

1. Throttle position is below
1%.
2. Desired injection quantity is
more than 0mg/strk.
3. Engine speed is more than
2000rpm.

MAB (fuel cutoff solenoid
valve) is operated.

Desired injection quantity is below
0mg/strk.

1. ECM malfunction.
2. PSG (pump control unit) 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

4JA1

-TC

(MT)

4JH1

-TC

(MT)

4JH1

-TC

(AT)