EFI SYSTEM — Troubleshooting FI-11 SYMPTOM — DIFFICULT TO START OR NO START (CRANKS OK) CHECK DIAGNOSIS SYSTEM Check for output of diagnostic code. (See page FI-22) Normal code DOES ENGINE START WITH ACCELERATOR PEDAL DEPRESSED? OK NO CHECK FOR VACUUM LEAKS IN AIR INTAKE LINE BAD OK CHECK IGNITION SPARK 1. Unplug connectors of injector resistor and start injector time switch. 2. Check by holding spark plug wire 8 — 10 mm (0.31 — 0.39 in.) away from engine block while engine is cranking. A strong spark should be noted. BAD OK CHECK IGNITION TIMING 1. Short point terminals of the check connector. 2. Check ignition timing. STD: 10° BTDC (w/o F terminals of the check connector) NO OK CHECK FUEL SUPPLY TO INJECTOR 1. Fuel in tank bad 2. Fuel pressure in fuel line (1) Short fuel pump check terminals. (2) Fuel pressure at fuel hose of fuel filter can be felt. See page FI-45) BAD OK CHECK FUEL PUMP SWITCH IN AIR FLOW METER Check continuity between terminals Fc and E while measuring plate of air flow meter is open. BAD OK CONTINUED ON PAGE FI-12 Malfunction code(s) Diagnostic code(s) (See page FI-25) ISC system (1) ISC valve (2) Wiring connection (+B ISC valve ECU) 1. Oil filler cap 2. Oil level gauge 3. Hose connections 4. PCV hoses 5. EGR system — EGR valve stays open 1. Plug wires 2. High-tension cords 3. Distributor 4. Ignition coil, igniter Adjust ignition timing. (See page IG-9) 1. Fuel line — leakage — deformation 2. Fuse 3. Circuit opening relay (See page FI-69) 4. Fuel pump (See page FI-44) 5. Fuel filter 6. Fuel pressure regulator (See page FI-52) Air flow meter (See page FI-58)