P1614

P1614 ETS ECU Malfunction (EEPROM R/W)

General Description

A malfunction is detected by using a checksum technique for verifying data. The digital data is composed of zeros and ones. A checksum is the total of all ones in a string of data. By comparing the checksum value with a stored value, a malfunction can be detected.

DTC Description

This DTC is set if PCM judges that ETS unit is abnormal.

DTC Detecting Condition






Schematic Diagram






Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3. Has a problem been found?

YES

1) Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

NO

1) Faulty fuel pump causes this P1614. First check it if it is O.K.

2) If the fuel pump is O.K., Substitute with a known-good ETS unit or PCM and check for proper operation. If the problem is corrected,replace ETS unit or PCM and then go to "Verification of Vehicle Repair" procedure. If ETS unit needs to be replaced, do initialization after it is replaced.

- Procedure of Initialization

1. Erase the trouble codes on PCM

2. Turn the ignition key on less than 1second and turn it off (Do not start the engine).

3. Turn the ignition key off and keep this condition until the main relay is turned off. (It will takes 10 second)

4. Turn ignition key on more than 1second to record the throttle motor position on the EEPROM.

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.

1. Monitor and record the Freeze Frame Data for the Diagnostic Trouble Code (DTC) which has been diagnosed.

2. Using a Scantool, Clear DTC.

3. Operate the vehicle within conditions noted in the freeze frame data or enable conditions.

4. Monitor that all readiness test have been verified as "Complete"

5. Are any DTCs present ?

YES

1) Go to the applicable troubleshooting procedure.

NO

1) System is performing to specification at this time.