Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 26

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

6E–99

46

P0645

4

ON

A/C Compressor Relay Circuit
Voltage Low

A/C compressor relay circuit
open or short to ground circuit.

No fail-safe function.

A/C compressor relay circuit is cor-
rect condition.

1. A/C compressor relay circuit
open or short to ground circuit.
2. Poor connector connection.
3. A/C compressor relay malfunc-
tion.
4. ECM malfunction.

41

-

8

ON

A/C Compressor Relay Circuit
Voltage High

A/C compressor relay circuit
short to voltage circuit.

ECM malfunction.

-

-

25

P0703

A

ON

Brake Switch Malfunction

1. Throttle position is more
than 0%.
2. Engine speed is more than
693rpm (4JA1-TC) or 665rpm
(4JH1-TC).
3. Vehicle speed is more than
0km/h.
4. Brake switch 1 signal and
brake switch 2 signal are dif-
ferently inputted to the ECM
since the ignition switch was
turned on.

No fail-safe function.

Brake switch 1 signal and brake
switch 2 signal are correctly input-
ted to the ECM.

1. Brake switch 1 circuit open,
short to ground or short to volt-
age circuit.
2. Poor connector connection.
3. Brake switch 1 malfunction.
4. ECM malfunction.

30

-

B

ON

Brake Switch Malfunction

1. Throttle position is more
than 0%.
2. Engine speed is more than
693rpm (4JA1-TC) or 665rpm
(4JH1-TC).
3. Vehicle speed is more than
0km/h.
4. Brake switch 1 signal and
brake switch 2 signal are dif-
ferently inputted to the ECM.

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

65

-

57

P0704

6

ON

Clutch Switch Input Circuit Mal-
function

Clutch signal does not change
between vehicle speed 1.5km/
h and 80km/h since ignition
switch was tuned on.

No fail-safe function.

Clutch signal correctly changes.

1. Clutch switch circuit open,
short to ground or short to volt-
age circuit.
2. Poor connector connection.
3. Clutch switch malfunction.
4. ECM malfunction.

31

-

-

86

P1105

1

ON

Barometric Pressure Sensor Cir-
cuit High Input

Barometric pressure sensor
output voltage is more than
4.4V.

ECM uses 1013hpa condition
as substitute.

Barometric pressure sensor output
voltage is below 4.4V.

ECM malfunction.

-

-

2

ON

Barometric Pressure Sensor Cir-
cuit Low Input

Barometric pressure sensor
output voltage is below 1.5V.

Barometric pressure sensor output
voltage is more than 1.5V.

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)

6E–100

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

21

P1120

1

ON

Pedal/Throttle Position Sensor
Circuit High Input

Throttle position sensor out-
put voltage is more than 4.5V.

ECM increases idle speed up
to 1400rpm.

Throttle position sensor output volt-
age is below 4.5V.

1. Sensor power supply circuit
short to voltage circuit.
2. Sensor signal circuit short to
voltage circuit.
3. Sensor ground circuit open or
short to voltage circuit.
4. Poor connector connection.
5. TPS malfunction.
6. ECM malfunction.

38/ 49/ 57

-

7

ON

Pedal/Throttle Position Sensor
Voltage Supply Circuit High Input

Throttle position sensor power
supply voltage is more than
5.2V.

Throttle position sensor power sup-
ply voltage is below 5.2V.

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

57

-

9

ON

Pedal/Throttle Position Sensor
Voltage Supply Circuit Low Input

Throttle position sensor power
supply voltage is below 4.6V.

Throttle position sensor power sup-
ply voltage is more than 4.6V.

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

57

-

D

ON

Pedal/Throttle Position Sensor
Brake Switch Error

1. Engine speed is more than
1700rpm.
2. Throttle position sensor is
more than 8.7%.
3. When brake pedal is
depressed during accelerator
pedal is depressing.

Throttle position is more than 20%
or brake pedal is released (switch is
inactive).

1. Throttle sticking.
2. TPS incorrect adjusting.
3. TPS malfunction.
4. Brake switch malfunction.
5. ECM malfunction.

30/ 38/ 65

-

E

ON

Pedal/Throttle Position Sensor
Idle Position Switch Error

1. When idle switch is turned
off, throttle position sensor
was below 0.35%.
or
2. When idle switch is tuned
on, throttle position sensor
was more than 7.8%.

1. When throttle position sensor is
100%, idle switch turns off.
2. When throttle position sensor is
0%, idle switch turns on.

1. TPS malfunction.
2. Idle switch malfunction.
3. ECM malfunction.

38/ 69

-

22

P1173

3

OFF

Fuel Reduction Caused By High
Coolant Temperature

Excessive high engine cool-
ant temperature is detected.

No fail-safe function.

Engine coolant temperature is nor-
mal range.

1. Engine overheat.
2. ECT sensor malfunction.
3. ECM malfunction.

89

-

7

OFF

Fuel Reduction Caused By High
Fuel Temperature

Fuel temperature is more than
100°C.

PSG (pump control unit) con-
trols fuel injection quantity
based on engine speed and
fuel temperature.

Fuel temperature is below 100°C.

1. ECM malfunction.
2. PSG (pump control unit) mal-
function.

-

-

A

OFF

Fuel Reduction Caused By Low
Fuel Temperature

Excessive low fuel tempera-
ture is detected.

No fail-safe function.

Fuel temperature is normal range.

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)

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

6E–101

43

P1335

A

ON

Engine Speed Output Circuit Mal-
function

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 cir-
cuit, short to ground or short to
voltage.
2. CKP sensor output harness
open circuit, short to ground or
short to voltage.
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) mal-
function.

90/91/98/

101

P0335(B)/

P0335(D)

45

P1345

A

ON

Camshaft Speed Malfunction

The PSG (pump control unit)
is recognized incorrect cam-
shaft speed signal.

No fail-safe function.

Correct camshaft speed.

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

-

-

47

P1520

A

ON

Neutral Switch ON Error

Neutral switch signal is input-
ted “On” three times consecu-
tively 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
voltage circuit.
2. Neutral switch malfunction.
3. ECM malfunction.

87

-

-

-

B

ON

Neutral Switch OFF Error

Neutral switch signal is input-
ted “Off” three times consecu-
tively under driving conditions.

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

87

-

-

-

71

P1576

4

ON

Exhaust Throttle VSV 1 Circuit
Voltage Low

Exhaust throttle VSV 1 circuit
open or short to ground circuit.

No fail-safe function.

Exhaust throttle VSV 1 circuit is cor-
rect condition.

1. Exhaust throttle VSV 1 circuit
open or short to ground circuit.
2. Poor connector connection.
3. Exhaust throttle VSV 1 mal-
function.
4. ECM malfunction.

40

-

-

-

8

ON

Exhaust Throttle VSV 1 Circuit
Voltage High

Exhaust throttle VSV 1 circuit
short to voltage circuit.

ECM malfunction.

-

-

-

-

71

P1577

4

ON

Exhaust Throttle VSV 2 Circuit
Voltage Low

Exhaust throttle VSV 2 circuit
open or short to ground circuit.

No fail-safe function.

Exhaust throttle VSV 2 circuit is cor-
rect condition.

1. Exhaust throttle VSV 2 circuit
open or short to ground circuit.
2. Poor connector connection.
3. Exhaust throttle VSV 2 mal-
function.
4. ECM malfunction.

61

-

-

-

8

ON

Exhaust Throttle VSV 2 Circuit
Voltage High

Exhaust throttle VSV 2 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)

6E–102

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

55

P1605

D

ON

EEPROM Defect

Write and read from the
EEPROM are failed during ini-
tialization 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
programmed 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
correct.

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

No recovery.

1. ECM malfunction.
2. Immobiliser control unit mal-
function.
3. Transponder key malfunction.

-

B****

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 voltage circuit.
2. ECM malfunction.
3. Immobiliser control unit mal-
function.
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 voltage circuit.
2. ECM malfunction.
3. Immobiliser control unit mal-
function.
4. Transponder key malfunction.

27/35

B****

56

P1614

A

-

Wrong Transponder Key

Received response signal is
not correct from the transpon-
der key.

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

No recovery.

1. ECM malfunction.
2. Immobiliser control unit mal-
function.
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
Malfunction

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

Fuel injection quantity is
reduced.

The PSG (pump control unit)
detects correct high pressure sole-
noid valve control circuit.

PSG (pump control unit) malfunc-
tion.

-

-

B

ON

Fuel Injection Quantity Circuit
Malfunction

The PSG (pump control unit)
detects high pressure solenoid
valve control circuit malfunc-
tion 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) 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

4JA1

-TC

(MT)

4JH1

-TC

(MT)

4JH1

-TC

(AT)