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Home >> Jaguar >> 2005 >> XJR >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing >> Descriptions & Operation >> Transmission Control Module (TCM) & Main Control Valve Body >> Transmission Electronic System >> Gear Ratio Monitoring

Gear Ratio Monitoring

The gear ratio diagnostic checks that each gear ratio is correctly engaged. Also, following a gear shift the diagnostic checks that the transmission has engaged the target gear within the allowed time.