Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
72 Camshaft Position (CMP)
sensor •
Ignition switch: ON
• Engine: Not cranking 4.8 - 5.2 V
• Engine: Cranking 0.4 - 3.0 V
• Engine: Idle 0.5 - 2.0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
23 CMP sensor Crank engine Signal output is no
variance for 4
seconds
continuously (no
pulse signal).•
CMP 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK GROUND CONNECTION
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect the ground connection E-208 (See Vehicle Wiring Harness Layout - Engine Room Harness (With Mit-
subishi 2.4L Engine) in Section 16 Wiring).
Is the ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace ground connection.
DIAGNOSIS & TESTING
03
03–505Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine 2.CHECK CAMSHAFT POSITION (CMP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the CMP electrical connector (1).
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Ye s>>Go to the next step.
No
>>Repair or replace the electrical connector
as necessary.
3.CHECK CAMSHAFT POSITION (CMP) SENSOR POWER SUPPLY CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch on.
• Check supply voltage between CMP sensor con-
nector E-056, terminal 3 and ground in the sensor
electrical connector E-056.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 5.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030080
LTSMD030014
03–506Chery Automobile Co., Ltd.