No Start Condition or Stalls After Start

1. Turn ignition on for 5 seconds, then crank engine for 5 seconds and note stored codes. If display reads ``..'', proceed to step 2. If no code or codes other than 12, 16, 20 or 51 are stored, proceed to step 4. If Code 12, 16, 20 or 51 is stored hard, refer to appropriate diagnostic procedure.
2. Check 15 amp ESC and 20 amp battery fuse on 1984 models. If either fuse is blown, check the appropriate circuit for a short to ground. If circuit is satisfactory and fuses blow again, the ECM or ECM connector is at fault.
3. If fuses do not blow, check circuits 439 and 480 for an open. If these circuits are satisfactory, and engine will not start, the ECM or ECM connector is at fault.
4. Turn ignition on and check injectors for leakage. If any spray or leakage is observed, refer to ``Injector System Diagnosis.''
5. Crank engine, and check fuel delivery. If only one injector is spraying, refer to ``Injector System Diagnosis.'' If neither injector is spraying, refer to ``Fuel System Diagnosis.'' If both injectors spray fuel, proceed to step 6.
6. Connect suitable spark tester to any spark plug wire and crank engine. If no spark is present, HEI system is not operating properly and must be repaired.
7. If spark is available at spark plug wire, the spark timing circuit of the ECM may be the cause of a no start condition. To check spark timing, disconnect four wire HEI module electrical connector and crank engine. Disconnecting HEI module connector allows the HEI system to operate in the bypass mode and spark timing is controlled by the HEI module. If engine starts in bypass mode, then the HEI module is not receiving the ECM spark timing signal. Check for open or short circuit in circuit 423. If circuit is satisfactory, ECM or ECM connector is at fault.
8. With spark and spark timing present, check fuel system next. Connect fuel pressure gauge J-25400-300 or equivalent to engine and crank engine. If gauge indicates 9-12 psi during cranking, system is operating properly. If fuel pressure is not as specified, refer to ``Fuel System Diagnosis.''
9. Check injectors for proper fuel delivery. If either injector does not deliver proper amount of fuel to engine during cranking, refer to ``Injector System Diagnosis.''