SFI SYSTEM, Diagnostic DTC:P0604, P0605, P0606, P060A, P060B, P062F

DTC Code	DTC Name
P0604	Internal Control Module Random Access Memory (RAM) Error
P0605	Internal Control Module Read Only Memory (ROM) Error
P0606	ECM / PCM Processor
P060A	Internal Control Module Monitoring Processor Performance
P060B	Internal Control Module A/D Processing Performance
P062F	Internal Control Module EEPROM Error

DESCRIPTION

P0604
The ECM continuously monitors its internal memory status. This self-check ensures that the ECM functioning properly. It is diagnosed by internal "mirroring" of the main CPU and sub CPU to detect the Random Access Memory (RAM) errors. If outputs from these CPUs are different and deviate from the standard, the ECM stores the DTC.

P0605
The ECM continuously monitors its internal memory status. This self-check ensures that the ECM functioning properly. It is diagnosed by internal "mirroring" of the main CPU and sub CPU to detect the Read Only Memory (ROM) errors. If outputs from these CPUs are different and deviate from the standard, the ECM stores the DTC.

P0606
The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standard, the ECM stores the DTC.

P060A
The main CPU and sub CPU of the ECM perform data communication between each other. The main CPU monitors the communications and WDC pulses from the sub CPU. If the malfunction is detected, the ECM stores the DTC.

P060B
If a communication error occurs in the ECM, the ECM stores the DTC.

P062F
The ECM monitors its internal operation. If the ECM detects an internal malfunction, the ECM stores the DTC.

DTC	DTC Setting Condition	Trouble Area
P0604	ECM internal error (RAM) (1 trip detection logic)	ECM
P0605	ECM internal error (ROM) (1 trip detection logic)	ECM
P0606	ECM internal error (Processor) (1 trip detection logic)	ECM
P060A	ECM internal error (Monitoring processor) (1 trip detection logic)	ECM
P060B	ECM internal error (A/D processor) (1 trip detection logic)	ECM
P062F	ECM internal error (EEPROM) (1 trip detection logic)	ECM

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.
Turn the GTS off.
Turn the ignition switch off.
Disconnect the GTS.
Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
Connect the cable to the negative (-) battery terminal.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Wait 16 seconds or more.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P0604, P0605, P0606, P060A, P060B or P062F.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.

If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.
Tech Tips
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

CAUTION / NOTICE / HINT

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

READ DTC OUTPUT (DTC P0604, P0605, P0606, P060A, P060B AND/OR P062F)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs Click here.
Turn the ignition switch off.
Turn the GTS off.
Disconnect the GTS.
Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
Connect the cable to the negative (-) battery terminal.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Wait for 16 seconds or more.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Result

Result	Proceed to
DTC is not output	A
DTC DTC P0604, P0605, P0606, P060A, P060B or P062F is output	B

CHECK FOR INTERMITTENT PROBLEMS Click here

REPLACE ECM Click here