Chery Tiggo. Manual — part 199
10.
CHECK CAMSHAFT
• Check the following:
− There should be no accumulation of debris on the signal plate of camshaft rear end.
− There should be no chip on the signal plate of camshaft rear end.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
11.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC 23 still present?
Yes
>>
Replace the ECM.
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03
25 - Atmosphere Pressure Sensor
DIAGNOSIS & TESTING
LTSMW030013T
Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL
NO.
ITEM
CONDITION
DATA VOLTAGE
65
Regulated sensor
supply
Ignition switch: ON
-
4.8 - 5.2 V
69
Atmosphere
pressure sensor
Sea level altitude: 0
M
3.7 - 4.3 V (101 kPa)
Sea level altitude:
600 M
95 kPa
Sea level altitude:
1200 M
3.2 - 3.8 V (88 kPa)
Sea level altitude:
1800 M
81 kPa
76
Sensor (GND)
Ignition switch: ON
0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSE
25
Atmosphere
pressure sensor
• Ignition switch ON
position for 60
seconds
• Engine: Running
• Signal output is
over 4.6 V for 4
seconds
continuously
(amount to 114 kPa
atmosphere
pressure).
• Signal output is
below 0.2 V for 4
seconds
continuously
(amount to 5.33 kPa
atmosphere
pressure).
• Atmosphere
pressure sensor
• Harness or
connectors
• ECM
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on.
• With the scan tool, record and erase stored DTCs in the ECM.
• Start engine and warm it to normal operating temperature, then select view DTC and data stream.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 03 Electronic Engine Controls for more information.
NOTE :
Before performing the following procedure, make sure that the ECM ground connection is in good condition.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
Diagnostic Procedure
1.
CHECK ATMOSPHERE PRESSURE SENSOR ELECTRICAL CONNECTOR
• Turn ignition switch off.
• Disconnect the atmosphere pressure sensor (atmo-
sphere pressure sensor is built-into) electrical con-
nector (1).
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector
as necessary.
2.
CHECK ATMOSPHERE PRESSURE SENSOR POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check supply voltage between atmosphere pres-
sure sensor connector E-058, terminal 1 and
ground in the atmosphere pressure sensor electrical
connector E-058.
• 4.8 - 5.2 V should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair circuit for an open or short in har-
ness or connectors.
If circuit is normal, go to the next step.
3.
CHECK ATMOSPHERE PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
ATMOSPHERE
PRESSURE
SENSOR
TERMINAL
ECM TERMINAL
5
76
DIAGNOSIS & TESTING
LTSMD030078
LTSMD030016
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст