P0604 - Internal Controller Module Random Access Memory (RAM) Error
P0605 - Internal Controller Module ROM Test Error
P0606 - ECM Processor
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION
DTC DETECTION
CONDITION
POSSIBLE CAUSE
P0604
Internal Controller Module
Random Access Memory
(RAM) Error
ECM detected an internal
failure.
• ECM
P0605
Internal Controller Module
ROM Test Error
P0606 ECM Processor
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 the engine and warm it to normal operating temperature.
• With the scan tool, select view DTCs in the ECM.
• If the DTC is detected, the 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 DTC
• Perform DTC confirmation procedure.
Is DTC P0604, P0605 or P0606 present?
Yes
>> Go to the next step.
No
>> The conditions that caused this code to set are not present at this time (See Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
2.
CHECK ECM POWER SUPPLY AND GROUND
• Check the ECM supply voltage circuit for voltage, ground circuit for an open, high resistance or any short cir-
cuits that exist.
Is the check result normal?
Yes
>> Go to the next step.
No
>> Repair or replace the circuit for an open or short in harness and connectors.
DIAGNOSIS & TESTING
03
03–149
Chery Automobile Co., Ltd.
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