Trouble Diagnoses — Consult (Cont'd)
EF & EC-422spec tableSELF-LEARN CONT TEST applies to vehicles with catalyzer only.
Consult (Cont'd)
ACTIVE TEST MODE
Active Test Mode
FUEL INJECTION TEST
Condition• Engine: Return to the original trouble condition • Change the amount of fuel injection using CONSULT.
JudgmentIf trouble symptom disappears, see CHECK ITEM.
Check Item (Remedy)• Harness and connector • Fuel injectors • Exhaust gas sensor
AAC/V OPENING TEST
Condition• Engine: After warming up, idle the engine. • Change the AAC valve opening percent using CONSULT.
JudgmentEngine speed changes according to the opening percent.
Check Item (Remedy)• Harness and connector • AAC valve
ENGINE TEMP TEST
Condition• Engine: Return to the original trouble condition • Change the engine coolant temperature using CONSULT.
JudgmentIf trouble symptom disappears, see CHECK ITEM.
Check Item (Remedy)• Harness and connector • Engine temperature sensor • Fuel injectors
IGN TIMING TEST
Condition• Engine: Return to the original trouble condition • Timing light: Set • Retard the ignition timing using CONSULT.
JudgmentIf trouble symptom disappears, see CHECK ITEM.
Check Item (Remedy)• Adjust initial ignition timing
POWER BALANCE TEST
Condition• Engine: After warming up, idle the engine. • A/C switch "OFF" • Shift lever "N" • Cut off each injector signal one at a time using CONSULT.
JudgmentEngine runs rough or dies.
Check Item (Remedy)• Harness and connector • Compression • Injectors • Power transistor • Spark plugs • Ignition coils
RADIATOR FAN TEST
Condition• Ignition switch: ON • Turn the radiator fan "ON" and "OFF" using CONSULT.
JudgmentRadiator fan moves and stops.
Check Item (Remedy)• Harness and connector • Radiator fan motor
FUEL PUMP RLY TEST
Condition• Ignition switch: ON (Engine stopped) • Turn the fuel pump relay "ON" and "OFF" using CONSULT and listen to operating sound.
JudgmentFuel pump relay makes the operating sound.
Check Item (Remedy)• Harness and connector • Fuel pump relay
SELF-LEARN CONT TEST*
Condition• In this test, the coefficient of self-learning control mixture ratio returns to the original coefficient by touching "CLEAR" on the screen.
Judgment
Check Item (Remedy)
NOTE
Remarks: The monitor item marked "*" is applicable to vehicles with catalyzer only.