Symptom Rough Idling Andor Missing

CHECK DIAGNOSIS SYSTEM

Check for output of diagnostic code. (See page F1-23)

Malfunction code(s)

Diagnostic code(s) (See page F1-26»

Normal code

CHECK FOR VACUUM LEAKS IN AIR INTAKE LINE

2. Oil dipstick

3. Hose connections

4. PCV hoses

5. EGR system - EGR valve stays open

OK

CHECK AIR FILTER ELEMENT

BAD

Element - Clean or replace

i OK

CHECK IDLE SPEED STD: 7M-GE 700 rpm 7M GTE 650 rpm

CHECK IGNITION TIMING

1. Connect terminals Tei and Ei of the check connector.

2. Check ignition timing. STD: 10° BTDC @ idle

(w/ connect terminals Tei and Ei 1

OK CONTINUED ON PAGE FI-17

OK CONTINUED ON PAGE FI-17

OK

CHECK

INJECTORS

BAD

Injection condition

(See page FI-83»

OK

CHECK

EFI ELECTRONIC CIRCUIT

BAD

1. Wiring connection

USING

VOLT/OHMMETER

2. Power to ECU

(See pages Fl 30. 49)

(1) Fusible links

(2) Fuses (EFI 15A, IGN 7.5A)

(3) EFI main relay

3. Air flow meter

4. Water temp, sensor

5. Air temp, sensor

6. Throttle position sensor

7. Injection signal circuit

(1> Injector wiring

(2) Resistor (7M GTE}

(3) ECU

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