FuelInjectionTroubleshooting

Fuel Injection Troubleshooting

Contents

• i - Table of Contents
• ii - Table of Contents (continued)
• iv - Introduction
• v - Introduction (continued)

Diagnosis: Starter runs, engine will not start:

• 1 - Diagnostic process
• 2 - Air Intake System diagrams
• 3 - Diagnostic process (continued)
• 4 - Diagnostic process (continued)
• 5 - Diagnostic process (continued)
• 6 - Diagnostic process (continued)
• 7 - Diagnostic process (continued)
• 8 - Diagnostic process (continued)
• 9 - Diagnostic process (continued)
• 10 - Diagnostic process (continued)
• 11 - Diagnostic process (continued)
• 12 - Diagnostic process (continued)

Diagnosis: Starter runs, engine will not start when cold:

• 13 - Diagnostic process
• 14 - Diagnostic process (continued)

Diagnosis: Starter runs, engine will not start when hot:

• 15 - Diagnostic process
• 16 - Diagnostic process (continued)

Diagnosis: Engine starts then stops:

• 17/18 - Diagnostic process

Diagnosis: Engine idles too high:

• 19 - Diagnostic process
• 20 - Diagnostic process (continued)
• 21/22 - Diagnostic process (continued)

Diagnosis: Engine idles too low, or rough idle:

• 23/24 - Diagnostic process

Diagnosis: Hesitation:

• 25/26 - Diagnostic process

Diagnosis: Inadequate power & poor performance:

• 27 - Diagnostic process
• 28 - Diagnostic process (continued)

Diagnosis: Excessive fuel consumption:

• 29/30 - Diagnostic process

Diagnosis: CO value too high:

• 31 - Diagnostic process

Electrical diagrams:

• 32 - Electrical component location
• 33 - Ck coolant temperature sensor resistance
• 34 - Ck thermo time switch
• 35 - Ck air flow meter
• 36 - Ck air flow meter (continued)
• 37 - Ck air flow meter (continued)
• 38 - Ck voltage output to fuel pump @ relay set
• 39 - Ck voltage input to relay set from ignition switch
• 40 - Ck voltage input to fuel pump relay of relay set
• 41 - Ck input voltage to control relay of relay set
• 42 - Ck input voltage to control relay of relay set (continued)
• 43 - Ck output voltage from control relay of relay set
• 44 - Ck output voltage from control relay of relay set (continued)
• 45 - Ck output voltage from control relay of relay set (continued)
• 46 - Ck voltage signal from coil to control unit
• 47 - Ck ground circuit for control unit
• 48 - Ck ground circuit for control unit (continued)
• 49 - Ck ground circuit for control unit (continued)
• 50 - Ck air temperature sensor resistance
• 51 - Ck input to fuel pump relay of relay set
• 52 - Ck voltage @ auxiliary air regulator
• 53/54 - Ck full throttle contacts of throttle plate switch

FI Maintenance: 1500cc engine:

• 55 - Maintenance process
• 56 - Maintenance process (continued)
• 57 - Maintenance process (continued)
• 58 - Maintenance process (continued)
• 59 - Maintenance process (continued)
• 60 - Maintenance process (continued)
• 61 - Maintenance process (continued)
• 62 - Maintenance process (continued)
• 63 - Maintenance process (continued)
• 64 - Maintenance process (continued)

FI Maintenance: 2000cc engine:

• 65 - Maintenance process
• 66 - Maintenance process (continued)
• 67 - Maintenance process (continued)
• 68 - Maintenance process (continued)
• 69 - Maintenance process (continued)
• 70 - Maintenance process (continued)
• 71 - Maintenance process (continued)
• 72 - Maintenance process (continued)

Appendix: FI electrical system:

• 73/74 - Electrical system diagram
• 75 - Test specs
• 76 - Test specs (continued)