2000 Saturn LS2 3.0L MIL Lamp on
Both P1779/P1780 appear to deal with comm. between ECM and TCM on the CAN network. Cannot find problem with PNP sw. inputs to either ECM or TCM. Have perfect continuity between ECM and TCM on tan and tan w/black wires(CAN network) No TCM codes, clear ECM code ...
FIX posted 8/25/2005
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Vehicle Data2000 Saturn LS2
Trouble Codes
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Vehicle Data
2000 Saturn LS2
VIN | 1G8JW52R7Y |
Engine | 3.0 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P1780 | Shift Control System Malfunction |