SYMPTOM TROUBLESHOOTING
F2-21flowchartTROUBLESHOOTING GUIDE
SYMPTOM TROUBLESHOOTING
2 CRANKS NORMALLY BUT WILL NOT START (NO COMBUSTION)
| Specification | Value |
|---|---|
| DESCRIPTION | Engine cranks at normal speed but shows no sign of firing; Battery in normal condition; Throttle valve not held fully open while cranking (dechoke system not operating); Fuel in tank |
DESCRIPTION
Engine cranks at normal speed but shows no sign of firing; Battery in normal condition; Throttle valve not held fully open while cranking (dechoke system not operating); Fuel in tank
NOTE
[TROUBLESHOOTING HINTS] Because of no combustion, possibly no fuel is injected to engine or no ignition at all cylinders. (1) No spark: Ignition control malfunction; Ignition system component malfunction. (2) No fuel injection: Fuel pump inoperative; Fuel injectors inoperative. (3) Low fuel line pressure. (4) Low engine compression. (5) ECM power supply circuit open. (6) ECM ground circuit open. (7) No NE and SGC signals. (8) Main relay malfunction.
2 CRANKS NORMALLY BUT WILL NOT START (NO COMBUSTION) — STEP / INSPECTION / ACTION
1
STEP 1: Is strong blue spark visible at disconnected high-tension lead? (refer to section G)
Yes
Go to step 3
No
2
STEP 2: Is "00" displayed on SST with ignition switch ON? (page F2-73)
No
"00" not displayed: Diagnostic trouble Code No. displayed. Check for cause (Refer to specified check sequence) (page F2-74)
Yes ("00" displayed)
3
STEP 3: Connect data link connector terminals F/P and GND by using jumper wire; Is fuel pump operating sound heard with ignition switch ON?
Yes
4
Does engine start in this condition? If it does, check fuel pump (page F2-110). If it does not, go to step 5.