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check engine light/transmission fault code 850

posted by  Rishi on  Sun Dec 14 10:50 CST 2003
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Following info may help you

DTC 134: INCORRECT LOAD SIGNAL
1) Load signal from ECM provides information to TCM on torque
being delivered by engine. If TCM does not register an incoming load
signal when RPM sensor on transmission gives a signal that input shaft
RPM is greater than about 600 RPM, DTC 134 will set.
2) If DTC 134 is set, check for poor terminal contact in
connectors between TCM and ECM. Also check for an open, short circuit
to voltage, or short circuit to ground in signal wiring between ECM
and TCM. If all circuits are okay, connect scan tool to DLC. Ensure
engine is warm, transmission is in neutral, and A/C is off. Select
SCROLLING VALUES. Load signal should be about 35. If load signal is
okay, replace TCM. If load signal is not okay, replace ECM.






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