P0602 - Ecm Programming Error; Match Ecm - Chery Tiggo 2009 Service Manual

P0602 - ECM Programming Error

• Self-diagnosis detection logic.
DTC NO.
P0602
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.
• Run engine for a while then select view DTC.
• If DTC is detected, go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnosis & Testing Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.
CHECK DTC
• Perform DTC confirmation procedure.
Is DTC P0602 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 open or short in harness and connectors.
3.

MATCH ECM

• With the scan tool X-431, match the ECM before replacing it (See ECM Removal & Installation in Section 03
Electronic Engine Controls), and view the DTC with the X-431.
Is DTC P0602 still present?
Yes >>
Go to the next step.
No >>
The DTC was caused by a programming error.
Chery Automobile Co., Ltd.
DIAGNOSIS & TESTING
DTC DEFINITION
ECM programming error
POSSIBLE CAUSE
• ECM
03
195
03–