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Test Charts

Fig 1: Diagnostic Circuit Check

G42036

Fig 2: Driver Complaint

G42037

Fig 3: System Performance Check

G42038

Fig 4: Dwell Fixed Under 10° Chart 1

G42039

Fig 5: Dwell Fixed Between 10-80° Chart 2

G42040

Fig 6: Dwell Fixed Over 80° Chart 3

G42041

Fig 7: Idle Switch and WOT Switch Circuit Check Chart 4

G42042

Fig 8: "Check Engine" Light Inoperative Chart 5

G42043

Fig 9: Won't Flash Code 12 Chart 6

G42044

Fig 10: Open Oxygen Sensor Circuit Trouble Code 13

G50E08480

Fig 11: No Reference Pulses To ECM Trouble Code 12

G42046

Fig 12: Shorted Coolant Sensor Circuit Trouble Code 14

G42047

Fig 13: Open Coolant Sensor Circuit Trouble Code 15

G42048

Fig 14: Idle Switch Circuit Open or WOT Switch Circuit Shorted Trouble Code 21

G42049

Fig 15: Fuel Cut (F/C) Solenoid Circuit Open or Grounded Trouble Code 22

G42050

Fig 16: Vacuum Control (V/C) Solenoid Circuit Open or Grounded Trouble Code 23

G42051

Fig 17: Air Switching (A/S) Solenoid Circuit Open or Grounded Trouble Code 25

G42052

Fig 18: No Reference Signal Trouble Code 31

G42053

Fig 19: Oxygen Sensor - Lean Indication Trouble Code 44

G42054

Fig 20: Oxygen Sensor - Rich Indication Trouble Code 45

G42055

Fig 21: Constant High Voltage From Fuel Cut (F/C) Solenoid to ECM Trouble Code 51

G42056

Fig 22: Ram Problem Trouble Code 52

G42057

Fig 23: Constant High Voltage From Air Switching (A/S) Solenoid to ECM Trouble Code 53

G42058

Fig 24: Constant High Voltage From Vacuum Control (V/C) Solenoid to ECM Trouble Code 54

G42059

Fig 25: A/C Converter Problem Trouble Code 55

G42060

Fig 26: Air Management Check

G42061

Fig 27: Idle and WOT Switches ASM. Check

G42062

Fig 28: Vacuum Control Valve (VC) Check

G42063