Circuit Description

PCM performs an internal self-test on its Random Access Memory (RAM) or read/write memory. If this self-test fails, this DTC will set.

Conditions for setting this DTC:

• Ignition voltage greater than 10 volts.
• Ignition on for 5 seconds.
• PCM is powered up.
• PCM detects an internal microprocessor integrity fault or internal RAM test fails.