FI/EFI System — Symptom — Difficult to Start or No Start (Cranks Ok), page 12

FI-12

EFI SYSTEM — Troubleshooting

SYMPTOM — DIFFICULT TO START OR NO START (CRANKS OK)

CHECK DIAGNOSIS SYSTEM
Check for output of diagnostic code.
(See page FI-23)

Normal code

Malfunction
code(s)

Diagnostic code(s) (See page FI-26)

DOES ENGINE START WITH
ACCELERATOR PEDAL DEPRESSED?

OK

ISC system
(1) ISC valve
(2) Wiring connection

NO

CHECK FOR VACUUM LEAKS IN AIR
INTAKE LINE

BAD

1. Oil filler cap
2. Oil dipstick
3. Hose connections
4. PCV hose
5. EGR system — EGR valve stays open

OK

CHECK IGNITION SPARK
7M-GE    (See page IG-5)
7M-GTE  (See page IG-10)

BAD

1. High-tension cords
2. Distributor (7M-GE) or cam position
   sensor (7M-GTE)
3. Ignition coil
4. Igniter

OK

CHECK SPARK PLUGS
Plug gap:  7M-GE    1.1 mm (0.043 in.)
           7M-GTE  0.8 mm (0.031 in.)
— HINT —
Check compression pressure and valve
clearance if necessary.

NO

1. Spark plugs
2. Compression pressure
   Minimum:  9.0 kg/cm²
             (128 psi, 883 kPa)
             at 250 rpm
3. Valve clearance
   Standard:  IN   0.15 — 0.25 mm
                    (0.006 — 0.010 in.)
              EX  0.20 — 0.30 mm
                    (0.008 — 0.012 in.)

BAD
All
Plugs
WET

1. Injector — Shorted or leaking
2. Injector wiring — Short circuited
3. Fuel pressure — Leakage
   (See page FI-77)
4. Cold start injector time switch
   (See page FI-112)

OK  CONTINUED ON PAGE FI-13