Toyota 4A-FE Repair Manual page 86

EFI SYSTEM - Troubleshooting
Fl-15
Digital Type
Analog Type
4. Use a volt/ohmmeter with high impedance (10 kfi/V
minimum) for troubleshooting of the electrical circuit.
f'-. 7
(See page Fl-34)
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-
-
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v
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v
tl --
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CHECK ELECTRIC SOURCE
i
OK
CHECK STARTING SYSTEM
--
CHECK DIAGNOSIS SYSTEM
FI0889
TROUBLESHOOTING PROCEDURES
SYMPTOM - DIFFICULT TO START OR NO START
(ENGINE WILL NOT CRANK OR CRANKS SLOWLY)
;-
1. Battery
BAD ( 1) Connection
(2) Gravity-Drive belt-charging system
(3) Voltage
2. Fusible link
1. Ignition switch
BAD 2. Starter
3. Neutral start switch (A/T)
4. Wiring/Connection
SYMPTOM - DIFFICULT TO START OR NO START
(CRANKS OK)
Diagnosis code(s)
Check for output of diagnosis code.
Malfunction 4A-FE (See page Fl-28)
(See page Fl-25) code{s) 4A-GE (See page Fl-29)
I
t
Normal code
CHECK FOR VACUUM LEAKS IN AIR
-
;-
1 . Oil dipstick
INTAKE LINE BAD 2. Hose connection(s)
3. PCV hose(s)
4. EGR system - EGR valve stays open
~OK
CHECK IGNITION SPARK
1. High-tension cords
4A-FE (See page IG-6) BAD 2. llA. Distributor
4A-GE (See page IG- 1 0) 3. Ignition coil, igniter
i
OK
CHECK tGNITION TIMING
- Ignition timing - Adjust
1. Short terminals TE1 and E1 of the check
I
NO 4A-FE (See page EM-20)
connector.
4A-GE (See page EM-28)
2. Check ignition timing.
I
Standard:
1 0° BTDC
@
idle
i
OK
CONTINUED ON PAGE Fl-16