P0507

Idle speed is higher than the
target speed by 200 rpm

1. Engine is at idle.

2. Vehicle speed is equal to 0.

3. Engine coolant temperature is higher

than 60°C (140 ºF) .

4. Duration Longer Than 10 s.

3. Diagnostic Steps:

Note

Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.

Step 1

Check whether there are control system DTC codes other than DTC P0506 P0507.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Press the scan tool power button.

(d)

Select the following menu items: Engine/Read DTC codes.

(e)

Read DTC codes.

Results:

DTC Codes Shown

To Step

DTC P0506 P0507

No

DTC code other than P0506 P0507

Yes

Yes

2.2.7.11

 

DTC Code Index

No

Step 2

Check whether generator is working properly.

(a)

Use scan tool to observe whether the system voltage
parameters are normal.

Generator generating capacity normal?

No

Repair generator fault.

Yes

Step 3

Check intake air pressure sensor parameters.

(a)

Use scan tool to observe whether system intake pressure
transducer parameters are correct. Refer to "Data Stream
List".

Are intake air pressure sensor parameters normal?

No

Go to step 5

Engine

Control System JL4G15-D

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Yes

Step 4

Check air-conditioning working condition.

(a)

Use scan tool to observe whether the Air-Conditioning
working status is consistent with the actual Air-Conditioning
working condition. Refer to the "Data Stream List".

When the air-conditioning is switched on and the pressure switch
voltage is greater than 0 V, does the idle speed increase by about
150 rpm?

Yes

Go to step 7

No

Step 5

Check air intake system, exhaust system.

(a)

Check exhaust system for the existence of congestion, air
leakage.

(b)

Too much carbon residue in throttle.

Any of these malfunctions?

Yes

Repair the faulty parts.

No

Step 6

Check engine mechanical parts and accessory drive.

(a)

Shut down the engine and turn the ignition switch to "OFF".

(b)

Check whether engine accessory drive belt is slack.

(c)

Remove engine accessory belt, neutral gear. Rotate the
engine crankshaft check whether mechanical moving parts
catching.

(d)

Rotate engine accessory pulley and air-conditioning pump.
Check whether engine and other components catching.

Any of these malfunctions?

Yes

Repair the faulty parts.

No

Step 7

Check ECM power supply circuit.

(a)

Check whether ECM power supply circuit is normal.

(b)

Check whether ECM ground circuit is normal.

No

Repair the faulty parts.

Yes

Step 8

Replace ECM.

(a)

Replace ECM.

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Control System JL4G15-D

Engine

(b)

Carry out crankshaft position sensor self learn. Refer to the
"crankshaft position sensor to learn."

Next

Step 9

Use scan tool to confirm whether the DTC code is stored again.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the ignition switch to "ON" position.

(c)

Clear DTC code.

(d)

Start and run the engine at idle speed to warm up the engine
for at least 5 min.

(e)

Read control system DTC code again to confirm that the
system has no DTC code.

No

Intermittent Fault. Refer to 

2.2.7.3

 

Intermittent

Fault Check

Yes

Step 10

Diagnostic completed.

5. Repair Instructions:

Replace throttle valve. Refer to "Throttle Replacement".

Refer to 

2.2.8.8

 

Engine Control Module Replacement

Replace ECM.

2.12.7.43 DTC P0562 P0563

1. DTC Descriptor:

DTC

P0562

System Voltage Too Low

DTC

P0563

System Voltage Too High

ECM Power Supply Circuit consists of the following circuits:

–

Battery power passes through main fuse and EF04 to ECM harness connector EO35 terminal No.1.

–

When the ignition switch turned to "ON" position, battery power passes through the ignition switch wiring harness connector IP23
terminal No.6 to the ECU fuse 10, and finally to ECM harness connector EO35 terminal No. 3.

–

When ECM detects both ECM harness connector EO35 terminal No.3 and ECM connector EO35 terminal No.62 have battery
voltage, ECM grounds EO35 terminal No.62 through an internal circuit. Because EO35 terminal No.62 and main fuse terminal
No.1 are connected, the main relay pulls in.

–

When main relay pulls in, the battery power passes through main relay terminal No.3 to ECM harness connector EO35 terminals
No.6 and 22.

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2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC Detection Strategy

Conditions For Setting The DTC

(Control Strategy)

Fault Locations

P0562

Lower Than the Lower Limit

1. Ignition switch is at "ON".

2. Battery voltage is less than 11 V.

3. Duration is longer than 40 s.

1. ECM Power Supply Circuit

2. Generator

3. ECM

P0563

More Than the Upper Limit

1. Ignition switch is at "ON".

2. Battery voltage is greater than

16 V.

3. Duration is longer than 40 s.

3. Schematic:

12

01

18

04

PWR GND

EO35

73

EO35

EO35

EO35

EO35

EO35

VBAT

1

IGN

3

MPR

VBATPROT

VBATPROT

6

62

22

Main Relay

Engine 

Control 

Module

Ignition Switch

FE02-5286b

4. Diagnostic Steps:

Step 1

Check ECM fuses EF01 and EF18.

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