
1997 Geo Prizm LSi 1.8L MIL Lamp on
found code 1780 comes back every time vehicle is placed from park to any gear and back. new switch has same thing. found 12 volts on pcm connector pins for reverse, low, and 2nd gear, but not for park or [...] new wire from switch to pcm, has same problem, tri...
Summary posted 9/7/2004
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Message Closed w/Summary
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VIN | 1Y1SK5283V |
Engine | 1.8 L / 4 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / MFI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Misc. | 4 Door |
Trouble Codes
P1780 | Shift Control System Malfunction |
Message Closed w/Summary
Vehicle Data
1997 Geo Prizm LSi
VIN | 1Y1SK5283V |
Engine | 1.8 L / 4 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / MFI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Misc. | 4 Door |
Trouble Codes
P1780 | Shift Control System Malfunction |