TROUBLESHOOTING GUIDE — CRANKS NORMALLY BUT WILL NOT START (PARTIAL COMBUSTION) — AFTER WARM-UP (continued)
F2-26flowchartCRANKS NORMALLY BUT WILL NOT START (PARTIAL COMBUSTION) — AFTER WARM-UP (steps 5-9, continued from F2-25)
1
STEP 6: Disconnect engine coolant temperature sensor connector; does engine start?
Yes
Check engine coolant temperature sensor (page F2-152). If OK, check connectors of engine coolant temperature sensor and ECM 2E terminal (page F2-141). If not OK, replace engine coolant temperature sensor
Check engine coolant temperature sensor (page F2-152). If OK, check connectors of engine coolant temperature sensor and ECM 2E terminal (page F2-141). If not OK, replace engine coolant temperature sensor
No — Go to next step
2
STEP 7: Is "00" displayed on SST with ignition switch ON? (page F2-73). Self-Diagnosis Checker / System Selector.
No
Diagnostic trouble Code No. displayed. Check for cause (Refer to specified check sequence) (page F2-74)
Yes ("00" displayed) — Go to next step
3
STEP 8: Are ECM terminal voltages OK? 1B-Main relay; 2B-Volume air flow sensor; 2E-Engine coolant temperature sensor (page F2-141)
No
Check for cause (page F2-141)
Yes — Go to next step
4
STEP 9: Try a known good ECM; does condition improve? (page F2-141)
No
Change to another brand of fuel
Yes
5
Replace ECM (page F2-141)