ECM SYSTEM
WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, DM
1-205
DTC 1611-Sensor Supply Voltage (5 Vext1/2) Simultaneous out-of-range
• Hardware: External Sensor Supply Voltage Regulator 1/2
• Enabling Conditions: Engine On
• Fault Condition: Voltage feedback on sensor supply circuit #1 above 5.40 V or below 4.60 V for longer than 1
second, and Voltage feedback on sensor supply circuit #2 above 5.40 V or below 4.60 V for longer than 1 second
• Corrective Action (s): Illuminate MIL, AL disable, AL disable in key cycle, Power derate 2, Low rev limit, Forced
idle
• Non-emissions related fault
• Possible Causes:
This fault indicates that both power supply feedback voltages are out-of-range as defined in the calibration.
In configurations where the crank and/or camshaft position sensors are powered hall-effect sensors, the engine
may stall due to loss of synchronization.
The external 5-volt supply powers sensors and other components in the engine control system. The accuracy of
this supply is critical to the accuracy of the sensors’ feedback, therefore, it is supplied from a precision regulator
whose output is internally monitored by the ECM. The ECM monitors the 5-volt supply to ratio metrically correct
sensor feedback and determine if the circuit is overloaded, shorted, or otherwise out of specification.
The fault of DTC 642 and DTC 652 will set if the internally measured voltage feedback of the regulator output is
lower than the low voltage limit as defined in the diagnostic calibration anytime the engine is running or stopped at
key-on (if applicable).
The fault of DTC 643 and DTC 653 will set if the internally measured voltage feedback of the regulator output is
higher than the high voltage limit as defined in the diagnostic calibration anytime the engine is running or stopped at
key-on (if applicable).
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