FI SYSTEM DIAGNOSIS
CONTENTS
PRECAUTIONS IN SERVICING....................................................................4- 2
ELECTRICAL PARTS.............................................................................4- 2
FUSE.......................................................................................................4- 3
ECM/VARIOUS SENSORS.....................................................................4- 3
ELECTRICAL CIRCUIT INSPECTION PROCEDURE ...........................4- 5
USING TESTERS....................................................................................4- 8
FI SYSTEM TECHNICAL FEATURES..........................................................4- 9
INJECTION TIME (INJECTION VOLUME).............................................4- 9
COMPENSATION OF INJECTION TIME (VOLUME).............................4-10
INJECTION STOP CONTROL................................................................4-10
FI SYSTEM PARTS LOCATION.............................................................4-11
FI SYSTEM WIRING DIAGRAM .............................................................4-13
SELF-DIAGNOSIS FUNCTION.....................................................................4-14
USER MODE...........................................................................................4-14
DEALER MODE......................................................................................4-15
TPS ADJUSTMENT................................................................................4-16
FAIL-SAFE FUNCTION.................................................................................4-17
FI SYSTEM TROUBLESHOOTING...............................................................4-18
CUSTOMER COMPLAINT ANALYSIS ..................................................4-18
SELF-DIAGNOSTIC PROCEDURES .....................................................4-20
SELF-DIAGNOSIS RESET PROCEDURE.............................................4-20
MALFUNCTION CODE AND DEFECTIVE CONDITION........................4-21
“C12” CKP SENSOR CIRCUIT MALFUNCTION...................................4-23
“C13” IAP SENSOR CIRCUIT MALFUNCTION ....................................4-25
“C14” TP SENSOR CIRCUIT MALFUNCTION......................................4-28
“C15” ECT SENSOR CIRCUIT MALFUNCTION ...................................4-31
“C21” IAT SENSOR CIRCUIT MALFUNCTION ....................................4-33
“C23” TO SENSOR CIRCUIT MALFUNCTION .....................................4-35
“C24” or “C25” IGNITION SYSTEM MALFUNCTION ..........................4-36
“C28” STV ACTUATOR CIRCUIT MALFUNCTION ..............................4-37
“C29” STP SENSOR CIRCUIT MALFUNCTION ...................................4-38
“C31” GEAR POSITION (GP) SWITCH CIRCUIT MALFUNCTION ......4-41
“C32” or “C33” FUEL INJECTOR CIRCUIT MALFUNCTION..............4-42
“C41” FP RELAY CIRCUIT MALFUNCTION.........................................4-44
“C42” IG SWITCH CIRCUIT MALFUNCTION .......................................4-44
“C49” PAIR CONTROL SOLENOID VALVE CIRCUIT
MALFUNCTION ......................................................................................4-45
“C44” HO2 SENSOR (HO2S) CIRCUIT MALFUNCTION (E-02, 19).....4-47
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