Skyhawk L4-112 1.8L Turbo VIN J FI (1984)
Fig. 009 - Chart C-1A - Park/Neutral Switch
1.
Checks for switch closing in the P/N position. This is indicated by low voltage on CKT 434.
2.
Checks to see that voltage increases in D/R range.
3.
Checks for faulty wiring to ECM or faulty ECM itself. If voltage is present, it means wiring and ECM are OK.