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DTC P0604: Control Module Random Access Memory (RAM): Troubleshooting

WARNING: This page is about a different car, the 2008 Suzuki Reno, 2008 Suzuki Forenza, 2007 Suzuki Reno, and 2007 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.
TROUBLESHOOTING CHART

Step Action Value (s) Yes No
1 Perform an ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK . Is the system check complete? - Go to Step 2 Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK
2 Replace the Engine Control Module (ECM).
Is the replacement complete?		 - Go to Step 3 -
3
  1. Using the scan tool, clear the (DTCs).
  2. Start the engine and idle at normal operating temperature.
  3. Operate the vehicle within the conditions for setting this DTC as specified in the supporting text.

Does the scan tool indicate that this diagnostic has run and passed?		 - Go to Step 4 Go to Step 2
4 Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?		 - Go to applicable DTC TABLE System OK
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