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Diagnostic Trouble Code: B1261
Diagnostic Trouble Code Name: Solar Radiation Sensor Circuit Short To Ground. Input held at less than 0.17V, External Fault
Vehicle Make: Ford
Vehicle Model: Falcon (FG)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Exhaust Camshaft Position Actuator Solenoid Control Circuit
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0010, P0013, or P2088-P2091
Circuit / System Description
The camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust duty cycle by controlling the amount of solenoid ON time. The camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust controls the advance or the retard of each camshaft. The camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust controls the oil flow that applies the pressure to advance or retard the camshafts.
Ignition voltage is supplied directly to the camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust. The ECM controls the camshaft position actuator solenoid valve - intake and camshaft position actuator solenoid valve - exhaust solenoid by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.
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