716
Troubleshooting
Analog HVIL Investigation
This subtree is used to troubleshoot errors in the
analog high voltage interlock loop (HVIL) when
requested during troubleshooting of a specific error
message. When the analog HVIL investigation
subtree is completed, the technician should return to
the original troubleshooting tree.
The purpose of the HVIL is to provide a warning if
any HV connector is unplugged without the HV
distribution being safely ended. Some onboard
equipment, such as the DCDC, A/C compressor, and
TMS, monitor their HV connectors locally and alert
the VCU via CAN if a connector is unplugged
(software HVIL). In contrast, the analog HVIL is a
physical circuit that runs through various HV
connectors on the vehicle. If a connector is
unplugged unsafely, the HVIL will be broken and the
VCU will detect the loss of signal voltage on the
circuit.
Because the analog HVIL is a single series circuit,
the VCU will detect the presence of a discontinuity
but not its location. The technician should use this
troubleshooting subtree.
Connector C3
Connector C5
Connector C15S (socket)
Connector C15P (pin)
Summary of Contents for SPICER PACCAR 220ev
Page 263: ...263 Troubleshooting Connector C53 Connector C100...
Page 274: ...274 Troubleshooting Connector C717 green Connector C718 yellow Connector C719 orange...
Page 322: ...322 Troubleshooting Connector C651 B Circuit73...
Page 468: ...468 Troubleshooting Connector C44 Connector C45 Connector C53 Connector C54 Connector C661...
Page 476: ...476 Troubleshooting Connector C44 Connector C45 Connector C53 Connector C54 Connector C661...
Page 514: ...514 Troubleshooting Connector C676 Connector C651 B Circuit73...
Page 636: ...636 Troubleshooting Connector C676 Connector C651 B Circuit73...
Page 702: ...702 Troubleshooting Connector C101 Connector C713 Connector C722 3 4 3 4...
Page 711: ...711 Troubleshooting Connector C101...
Page 730: ...730 Troubleshooting Connector C651 A...
Page 733: ...733 Troubleshooting Connector C651 A...
Page 736: ...736 Troubleshooting Connector C651 B Circuit73...
Page 738: ...738 Troubleshooting Connector C651 B Circuit73...