Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 122

6E–92

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

43

P1335

A

ON

Engine Speed Output Circuit Malfunc-
tion

The PSG (pump control unit) is
recognized defective engine speed
signal form the ECM.

Fuel injection quantity is
reduced.

Correct engine speed signal.

1. CKP sensor harness open circuit,
short to ground or short to voltage.
2. CKP sensor output harness open
circuit, short to ground or short to volt-
age.
3. Poor connector connection.
4. CKP sensor malfunction.
5. Pulse sensing gap incorrect.
6. Pulser malfunction.
7. Electrical interference.
8. Magnetic interference.
9. ECM malfunction.
10. PSG (pump control unit) malfunc-
tion.

90/91/98/

101

P0335(B)/

P0335(D)

45

P1345

A

ON

Camshaft Speed Malfunction

The PSG (pump control unit) is
recognized incorrect camshaft
speed signal.

No fail-safe function.

Correct camshaft speed.

1. Pump camshaft speed sensor mal-
function.
2. Pulse sensing gap incorrect.
3. Pulser malfunction.
4. Electrical interference.
5. Magnetic interference.
5. ECM malfunction.
6. PSG (pump control unit) malfunc-
tion.

-

-

47

P1520

A

ON

Neutral Switch ON Error

Neutral switch signal is inputted
“On” three times consecutively
under driving conditions.

No fail-safe function.

Correct neutral switch signal is inputted
two times consecutively under driving
conditions.

1. Neutral switch circuit short to volt-
age circuit.
2. Neutral switch malfunction.
3. ECM malfunction.

87

-

B

ON

Neutral Switch OFF Error

Neutral switch signal is inputted
“Off” three times consecutively
under driving conditions.

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

87

-

55

P1605

C

ON

Seed and Key File Destroyed

Seed or key file in EEPROM is
destroyed.

No fail-safe function.

No recovery.

ECM malfunction.

-

-

D

ON

EEPROM Defect

Write and read from the EEPROM
are failed during initialization of the
ECM.

ECM uses default values from
the EPROM.

Write and read from the EEPROM are
correct during initialization of the ECM.

ECM malfunction.

-

-

E

ON

EEPROM Defect

EEPROM checksum does not
match with the read check sum
during initialization of the ECM.

EEPROM checksum match with the
read check sum during initialization of
the ECM.

ECM malfunction.

-

-

56

P1610

A

-

Security Key and Security Code not
Programmed

Immobiliser functions are not pro-
grammed in the ECM.

1. Engine does not start.
2. Check engine lamp flash.

No recovery.

ECM malfunction.

-

B****

56

P1611

A

-

Wrong Security Code Entered

Received security code is not cor-
rect.

1. Engine does not start.
2. Check engine lamp flash.

No recovery.

1. ECM malfunction.
2. Immobiliser control unit malfunc-
tion.
3. Transponder key malfunction.

-

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–93

56

P1612

A

-

Immobiliser No or Wrong Signal

Received challenge signal is not
correct or not received.

1. Engine does not start.
2. Check engine lamp flash.

No recovery.

1. ECM and immobiliser control unit
communication circuit open circuit,
short to ground circuit or short to volt-
age circuit.
2. ECM malfunction.
3. Immobiliser control unit malfunc-
tion.
4. Transponder key malfunction.

27/35

B****

56

P1613

A

-

Immobiliser No or Wrong Signal

Received response signal is not
correct or not received.

1. Engine does not start.
2. Check engine lamp flash.

No recovery.

1. ECM and immobiliser control unit
communication circuit open circuit,
short to ground circuit or short to volt-
age circuit.
2. ECM malfunction.
3. Immobiliser control unit malfunc-
tion.
4. Transponder key malfunction.

27/35

B****

56

P1614

A

-

Wrong Transponder Key

Received response signal is not
correct from the transponder key.

1. Engine does not start.
2. Check engine lamp flash.

No recovery.

1. ECM malfunction.
2. Immobiliser control unit malfunc-
tion.
3. Transponder key malfunction.

-

B****

76

P1625

A

OFF

ECM Main Relay Switched Off Too
Early

When ignition switch was turned
off, timing of the ECM main relay
turning off is too early.

No fail-safe function.

No recovery.

ECM malfunction.

3/58

-

B

OFF

ECM Main Relay Switched Off Too
Late

When ignition switch was turned
off, timing of the ECM main relay
turning off is too late or does not
off.

No recovery.

1. ECM main relay malfunction.
2. ECM malfunction.

3/58

-

51

P1630

A

ON

Fuel Injection Quantity Circuit Mal-
function

The PSG (pump control unit)
detects high pressure solenoid
valve control circuit malfunction
due to high current.

Fuel injection quantity is
reduced.

The PSG (pump control unit) detects
correct high pressure solenoid valve
control circuit.

PSG (pump control unit) malfunction.

-

-

B

ON

Fuel Injection Quantity Circuit Mal-
function

The PSG (pump control unit)
detects high pressure solenoid
valve control circuit malfunction
due to continuous current.

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

No recovery.

PSG (pump control unit) malfunction.

-

-

44

P1650

A

ON

CAN Device Offline

CAN controller detects Bus-off or
canceling.

MAB (fuel cutoff solenoid valve)
is operated.

CAN controller detects correct Bus sig-
nal.

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. Poor connector connection.
4. Electrical interference.
5. ECM malfunction.
6. PSG (pump control unit) malfunc-
tion.

99/100

P1651(B)

B

ON

CAN Device Hang-up

CAN controller does not react
under engine running.

CAN controller reacts correctly under
engine running.

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

-

-

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–94

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

45

P1651

A

ON

CAN Malfunction (PSG)

The PSG (pump control unit) does
not recognize CAN signal from the
CAN controller.

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

The PSG (pump control unit) recognizes
CAN signal from the CAN controller.

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

-

-

B

ON

CAN Receives Error

The ECM does not read CAN sig-
nal from the PSG (pump control
unit).

The ECM reads CAN signal from the
PSG (pump control unit).

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. Poor connector connection.
4. Electrical interference.
5. ECM malfunction.
6. PSG (pump control unit) malfunc-
tion.

99/100

P1650(A)

77

P1690

4

OFF

Check Engine Lamp (MIL) Circuit Volt-
age Low

Check engine lamp circuit open or
short to ground circuit.

No fail-safe function.

Check engine lamp circuit is correct con-
dition.

1. Check engine lamp circuit open or
short to ground circuit.
2. Check engine lamp malfunction.
3. ECM malfunction.

42

B****

8

OFF

Check Engine Lamp (MIL) Circuit Volt-
age High

Check engine lamp 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

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

6E–95

DIAGNOSTIC TROUBLE CODE (DTC) P0100 (SYMPTOM CODE 7)

(FLASH CODE 65) MASS AIR FLOW (MAF) SENSOR VOLTAGE SUPPLY

CIRCUIT HIGH INPUT

DIAGNOSTIC TROUBLE CODE (DTC) P0100 (SYMPTOM CODE 9)

(FLASH CODE 65) MASS AIR FLOW (MAF) SENSOR VOLTAGE SUPPLY

CIRCUIT LOW INPUT

DIAGNOSTIC TROUBLE CODE (DTC) P0100 (SYMPTOM CODE B)

(FLASH CODE 65) MASS AIR FLOW (MAF) SENSOR OUTPUT CIRCUIT LOW

INPUT

DIAGNOSTIC TROUBLE CODE (DTC) P0100 (SYMPTOM CODE C)

(FLASH CODE 65) MASS AIR FLOW (MAF) SENSOR OUTPUT CIRCUIT HIGH

INPUT

Batt

µP

0.5
BLK/
URG

0.5
BLU/
RED

0.5
BLU/
RED

97

0.5
WHT/
RED

83

0.5
GRN/
RED

88

0.5
BLK/
RED

92

0.5
BLK/
BLU

84

IAT
Sensor

MAF &
IAT
Sensor

ECM
10A

EGR-
EVRV

2

4

5

3

1

ECM
Main Relay

IC

IC

CPU

Engine
Control
Module
(ECM)