DTC P0604 Internal Control Module Random Access Memory (Ram) Error: Wiring Diagram

Fig 1: Internal Control Module Random Access Memory (RAM) Error - Wiring Diagram

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DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >	Even if the malfunction indicator light illuminates, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector may be the cause.