3-62 FUEL SYSTEM (DFI)
How to Read Service Codes
Service codes are shown by a series of long or short blinks of the FI indicator LED light as shown
Read 10th digit and unit digit as the FI indicator LED light blinks.
When there are a number of problems, all the service codes can be stored and the display will
begin starting from the lowest number service code in the numerical order. Then after completing
all codes, the display is repeated until the self-diagnosis indicator terminal is open.
If there is no problem, no code and unlight.
For example, if two problems occurred in the order of 21, 12, the service codes are displayed from
the lowest number in the order listed.
(12 → 21) → (12 → 21) → · · · (repeated)
If the problem is with the following parts, the ECU cannot memorize these problems, the FI indicator
LED light doesn't go on, and no service codes can be displayed.
FI Indicator LED Light
Fuel Pump Relay
DFI Main Relay
ECU Power Source Wiring and Ground Wiring (see ECU Inspection in this chapter)
How to Erase Service Codes
Even if the ignition SW is turned OFF, the battery or the ECU are disconnected, or the problem is
solved, all service codes remain in the ECU.
Refer to Service Code Clearing Procedure for the service code erasure.