Explanation
The sensor power supply B (transducer power 2) voltage is low; the value is valid, but is lower than expected.
Possible Causes
• Problem with engine wire harness
• Shorted sensor
Summary of Fault Correction Possibilities
•
Inspect the Sensor Power B circuitry for opens and shorts. For the circuit diagram, refer to Section 5A ‑ Sensors.
•
Disconnect each sensor powered by sensor power B (refer to Section 5A ‑ Sensors), while observing CDS G3.
• If the fault does not disappear, reconnect the sensor and continue with the next sensor.
• If the fault does disappear, test that sensor for a short, and replace as required.
XDRPc_RangeHigh
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 603‑4 Yes 2
Explanation
The sensor power supply C (transducer power 3) voltage is high; the value is valid, but is higher than expected.
Possible Causes
• Problem with engine wire harness
Summary of Fault Correction Possibilities
•
Inspect the Sensor Power C circuitry for opens and shorts. For the circuit diagram, refer to Section 5A ‑ Sensors.
XDRPc_RangeLow
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 603‑5 Yes 2
Explanation
The sensor power supply C (transducer power 3) voltage is low; the value is valid, but is lower than expected.
Possible Causes
• Engine wire harness issues
• Shorted sensor
Summary of Fault Correction Possibilities
•
Inspect the Sensor Power C circuitry for opens and shorts. For the circuit diagram, refer to Section 5A ‑ Sensors.
•
Disconnect each sensor powered by sensor power C (refer to Section 5A ‑ Sensors), while observing CDS G3.
• If the fault does not disappear, reconnect the sensor and continue with the next sensor.
• If the fault does disappear, test that sensor for a short, and replace as required.
Fault Codes
Page 4A-48 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018
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