DTC Code

DTC Code Diagnostic

Information

Fail-Safe Mode

Restore Conditions

P0601

ROM Error

Vehicle can not start.

Next key cycle, no malfunction
condition detected.

P0602

ECM Processor Malfunction

Vehicle can not start.

Next key cycle, no malfunction
condition detected.

P0604

RAM error

Vehicle can not start.

Next key cycle, no malfunction
condition detected.

P0646

Air-Conditioning Clutch Relay Short
To Low Voltage or Open Circuit

No

No malfunction condition detected.

P0647

Air-Conditioning Clutch Relay Short
To High Voltage

No

Next key cycle, no malfunction
condition detected.

P0650

Fault Indicator Malfunction

No

No malfunction condition detected.

P0685

Main Relay Malfunction

Vehicle may not start.

(1) Open circuit, no malfunction

condition detected.

(2) Short to power supply. Next key

cycle, no malfunction condition
detected.

P2610

LPC Malfunction

No

No malfunction condition detected.

P0633

Alarm does not learn from
malfunction.

SVS lamp flashing; vehicle can not
start.

Next key cycle, IMMO learn
successful, or No malfunction
condition detected.

U0167

Anti-theft Device No Response

U0426

Anti-theft Device Authentication
Failure

2.12.7.9 Data Stream List

By reading the "Data Stream List" on the scan tool, you can check switches, sensors, actuators working state without removing any
parts.  Before  the  control  system  diagnosis,  observing  and  analyzing  data  is  the  first  step,  so  that  the  diagnose  time  could  be
shortened.

Note

Data under normal conditions is listed in the following table for reference only. Do not determine whether a part is faulty
solely based on these reference values. Under normal circumstances you can compare the vehicle that needs to be
repaired with a normal working vehicle in the same state to determine the current vehicle diagnostic data is normal or
not.

1. Run the engine to reach normal working temperature.

2. Turn the ignition switch to "OFF" position.

3. Connect the scan tool.

4. Turn the ignition switch to "ON" position.

5. Select "Engine"/"Read data stream."

Engine

Control System JL4G15-D

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6. Refer to the table and check all the data.

Data Stream Name

Ignition Switch "ON"

Idle Speed

2,500 rpm When

Engine Speed

0 rpm

795 rpm

2,500 rpm

Vehicle Speed

0

0

0

Current Computing Load

0.0%

100%

100%

Coolant Temperature

93°C (199 ºF)

93°C (199 ºF)

93°C (199 ºF)

Current Short-Term Fuel Adjustment (Bank1)

100%

90.62%

93.75%

Current Long-Term Fuel Adjustment (Bank1)

92.97%

92.97%

99.22%

Absolute Boost Pressure

100 kPa

47 kPa

27 kPa

Intake Air Temperature

54°C (129 ºF)

47°C (117 ºF)

52°C (126 ºF)

Absolute Throttle Position A

80.78%

85.10%

82.75%

Ignition Voltage

12.3 V

13.3 V

13.7 V

Oxygen Sensor 1 Installation Location

Yes

Yes

Yes

Oxygen Sensor 2 Installation Location

Yes

Yes

Yes

Pre-Catalytic Oxygen Sensor Voltage

0.08 V

0.07-0.81 V

0.067-0.81 V

Pre-Catalytic Oxygen Sensor Short-Term Fuel
Adjustment

100%

92.19%

94.53%

Post-Catalytic Oxygen Sensor Voltage

0.71 V

1.28 V

0.68 V

Post-Catalytic Oxygen Sensor Short-Term Fuel
Adjustment

99.22%

99.22%

99.22%

Current Instruction to Cylinder No.1 Ignition
Advance Angle

4 °

2 °

33 °

Vehicle Driving Distance When MIL Lamp Light

0 km

0 km

0 km

Relative Throttle Position

6.27%

1.57%

3.92%

Absolute Throttle Position B

18.82%

14.12%

16.86%

Acceleration Pedal Position D

14.51%

14.51%

18.43%

Acceleration Pedal Position E

7.06%

7.06%

9.02%

Throttle Position

8.63%

1.96%

5.49%

Vehicle Driving Time When MIL Lamp Light

0 min

0 min

0 min

Air-Conditioning Pressure Switch Voltage

0 V

0 V

0 V

Pre-Catalytic Oxygen Sensor Heating

78 mV

143-706 mV

14 mV

Post-Catalytic Oxygen Sensor Heating

703 mV

755 mV

660 mV

Fuel Sensor Voltage

5 V

5 V

5 V

Coolant Temperature (Start)

87°C (189 ºF)

87°C (189 ºF)

87°C (189 ºF)

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Control System JL4G15-D

Engine

Data Stream Name

Ignition Switch "ON"

Idle Speed

2,500 rpm When

EVAP Valve Duty Cycle

0%

6.25%

0%

Fuel Adjustment Cell

19 cell

18 cell

2 cell

Target Idle Speed

935 rpm

737 rpm

887 rpm

Injection

8.67 ms

2.56 ms

1.82 ms

Atmospheric Pressure

100.37 kPa

100.37 kPa

100.37 kPa

Air-Fuel Ratio

11.5

14.5

14.5

Engine Running Time

0 s

0 s

0 s

Calculated Catalyst Temperature

600°C (1112 ºF)

498°C (928 ºF)

591°C (1096 ºF)

Detonation Delay

0 °

0 °

0 °

Cylinder No.2 Currently Misfire

0 count

0 count

0 count

Cylinder No.1 Currently Misfire

0 count

0 count

0 count

Cylinder No.3 Currently Misfire

0 count

0 count

0 count

Cylinder No.4 Currently Misfire

0 count

0 count

0 count

Engine Odometer

0 km

0 km

0 km

ETC Acceleration Pedal Position

0%

0%

2.22%

Intake Valve Opening (As Opposed To LWOT)

8.66%

2.02%

5.55%

ETC Pedal Position Sensor 1

0%

0%

4.16%

ETC Pedal Position Sensor 2

0%

0%

4.09%

ETC Throttle Position Sensor 1

6.62%

1.54%

4.21%

ETC Throttle Position Sensor 2

6.55%

1.54%

4.21%

Fuel Level Output

4.71%

4.71%

4.71%

Pre-Catalytic Oxygen Sensor - Rich To Lean
Average Time

0.0 ms

0.0 ms

0.0 ms

Intake Air Temperature At Startup

55°C (131 ºF)

49°C (120 ºF)

49°C (120 ºF)

Intake Air Pressure

0.0 kPa

0.0 kPa

0.0 kPa

TEC Attempt To Convert To Lean

0 count

0 count

0 count

TEC ideal Throttle Position

8.82%

2.15%

5.76%

VVT Target Location

0 °

0 °

0 °

ETC Unpowered Throttle Position

8.40%

8.44%

8.44%

Pre-Catalytic Oxygen Sensor Heating

0.70 E

0.80 E

0.50 E

Post-Catalytic Oxygen Sensor Heating

0.42 E

0.44 E

0.34 E

Engine

Control System JL4G15-D

2-629

2.12.7.10 Action Test Table

By reading the "Action Test Table" on the scan tool, you can check switches, sensors, actuators working state without removing any
parts. Before the control system diagnosis, carrying out action test is a prerequisite, so that the diagnose time could be shortened.

Note

Data under normal conditions is listed in the following table for reference only. Do not determine whether a part is faulty
solely based on these reference values. Under normal circumstances you can compare the vehicle that needs to be
repaired with a normal working vehicle in the same state to determine the current vehicle diagnostic data is normal or
not.

1. Run the engine to reach normal working temperature.

2. Turn the ignition switch to "OFF" position.

3. Connect scan tool.

4. Turn the ignition switch to "ON" position.

5. Select "engine" / "Action Test".

6. Refer to the following table to test.

Scan Tool Display

Item

Test Component

Control Range

Diagnosis Description

Fault Indicator

Enable the engine fault
indicator.

ON/OFF

When the engine is running (or) the ignition switch
is turned on, with the signal accepted, the engine
control module will request the fault indicator to
light through the CAN bus. The fault indicator will
be on or off in 3-5s.

Canister Control Valve

Enable the canister solenoid
valve

0%, 50%, 100%

When the command is "ON" the solenoid valve will
be on or off within 3-5s.

Fuel Pump

Enable the Fuel Pump

ON/OFF

Note

Carry out this test only when the vehicle
speed is equal to zero the and vehicle vehicle
speed sensor has no fault.

This function controls the fuel pump relay. Fuel
pump relay will be ON/OFF within 3-5s.

Low-Speed Fan

Enable the Low-Speed cooling
fan.

ON/OFF

Note

Carry out this test only when the engine
coolant temperature is below 100°C
(212 ºF) and Air-Conditioning is not switched
on.

This function controls the Low-Speed cooling fan
relay. When the instruction is received, the cooling
fan will be on at high speed for 5 s.

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Control System JL4G15-D

Engine