Check Ecm Power Supply And Ground - Chery Tiggo 2009 Service Manual

Diagnostic Procedure
1.
CHECK DTC
• Perform DTC confirmation procedure.
Is DTC P0601, P0604, P0605 or P0606 present?
Yes >>
Go to the next step.
No >>
The DTC condition is intermittent (See Diagnostic Help in Section 03 Electronic Engine Controls).
2.

CHECK ECM POWER SUPPLY AND GROUND

• Check if the ECM supply voltage circuit, ground circuit open, high resistance or short circuits existing.
Is the check result normal?
Yes >>
Go to the next step.
No >>
Repair circuit for an open or short in harness or connectors.
3.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure .
Is DTC P0601, P0604, P0605 or P0606 still present?
Yes >>
Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No >>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
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DIAGNOSIS & TESTING
Chery Automobile Co., Ltd.