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IS 350
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Section 31 (Automatic Transmission (A760H) (Diagnostic Codes (P0500-U0100) & Circuit Tests))
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Automatic Transmission System
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DTC P0979: Shift Solenoid "C" Control Circuit Low (Shift Solenoid Valve S3); DTC P0980: Shift Solenoid "C" Control Circuit High (Shift Solenoid Valve S3)
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Typical Malfunction Thresholds
Typical Malfunction Thresholds
WARNING:
This page is about a different car, the 2010 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Range check (Low resistance)
P0979:
Shift solenoid valve S3 resistance
8 Ω or more
Range check (High resistance)
P0980:
Shift solenoid valve S3 resistance
100 kΩ or more