EG–503 ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING Trouble Area | Malfunction Indicator Lamp*1 | Memory*2 | See page Normal Mode | Test Mode • Open in EGR gas temp. sensor circuit • Short in VSV circuit for EGR • EGR hose disconnected, valve stuck • Clogged EGR gas passage • ECM ON | ON | ○ | EG–564 • Open or short in fuel pump ECU circuit • Fuel pump ECU • Fuel pump • ECM power source circuit • ECM OFF | ON | ○ | EG–568 • A/C switch circuit • Throttle position sensor IDL circuit • Park/neutral position switch circuit • Accelerator pedal and cable • ECM N.A. | OFF | X | EG–571 *3: This indicates items for which "2 trip detection logic" is used. With this logic, when a logic malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same case is detected again during the second drive test, this second detection causes the Malfunction Indicator Lamp to light up. The 2 trip repeats the same mode a 2nd time. (However, the IG switch must be turned OFF between the 1st trip and 2nd trip). In the Test Mode, the Malfunction Indicator Lamp lights up the 1st trip a malfunction is detected. Malfunction detection (1st time) (temporarily recorded) Malfunction detection (2nd time) (MIL lights up) Driving pattern | Driving pattern IG SW ON | IG SW OFF | IG SW ON | IG SW OFF 1st trip 2nd trip 2 trip