XJ-S Convertible (XJ27) L6-4.0L (1996)
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Possible causes:
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Partial short circuit to ground or open circuit in TP signal wire/connectors
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TP supply low - wiring/connectors high resistance
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TP faulty low out of range
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ECM fault in Analogue to Digital Conversion (ADC) and interface circuit - gives low volts
TP Circuit High Input, Diagnostic Code P 0123
A range check on the output of the throttle position sensor is performed to check for input values outside expected limits.
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High voltage threshold: 4.0 V
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Low voltage threshold: 0.15 V
High voltage test not performed at engine loads greater than 0.36 g/s. High voltage test counter not incremented until all conditions for test failure
have been present for greater than 5 seconds.
Possible causes:
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TP ground harness/connectors open circuit
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TP faulty high out of range
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ECM load signal is wrong (too low) but undetected
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ECM fault in Analogue to Digital Conversion (ADC) and interface circuit gives high volts
