Neon L4-2.0L SOHC (1995)
Powertrain Control Module: Description and Operation
PCM Related Trouble Code Messages
Internal Controller Failure
NAME OF CODE:
Internal Controller Failure
WHEN MONITORED:
With the ignition ON.
SET CONDITION:
There is an Eraseable Programable Read Only Memory (EPROM) sum check failure at power down.
THEORY OF OPERATION:
This code indicates the EPROM memory may be corrupt.
POSSIBLE CAUSES:
-
Failed Powertrain Control Module (PCM)
PCM Failure EEPROM Write Denied
NAME OF CODE:
PCM Failure EEPROM Write Denied
WHEN MONITORED:
With the ignition ON, SBEC tries to write to EEPROM memory.
SET CONDITION:
Unsuccessful attempt to write to EEPROM memory.
POSSIBLE CAUSES:
-
PCM failure
-
Busy bus
PCM Failure SPI Communications
NAME OF CODE:
PCM Failure SPI Communications
WHEN MONITORED:
With the ignition ON.
SET CONDITION:
Serial communications inside the controller fail eight times during a run cycle.
THEORY OF OPERATION:
Communications between microprocessors inside the Powertrain Control Module (PCM) are needed to operate the total system. If failure occurs,
the solenoids and relays may not actuate properly.
POSSIBLE CAUSES:
-
PCM failure
PCM Failure SRI Mile Not Stored
NAME OF CODE:
PCM Failure SRI Mile Not Stored
WHEN MONITORED:
With the ignition ON SBEC tries to write service reminder indicator mileage to EEPROM memory.
SET CONDITION:
Unsuccessful attempt to write to EEPROM memory.
POSSIBLE CAUSES:
-
PCM failure
-
Busy bus