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DTC B1498-87: A/C Inverter Local Missing Message [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The hybrid vehicle control ECU and compressor with motor assembly communicate via a direct line. Compressor control is stopped and this DTC is stored if communication information is cut off or abnormal information occurs.

This DTC is also detected if high-voltage power supplied from the inverter with converter assembly to the compressor control circuit is shut off.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from Priority
B1498-87 A/C Inverter Local Missing Message Diagnosis Condition:
  1. Ignition switch ON (READY)

Malfunction:

  • Error or open in communication line between the hybrid vehicle control ECU and compressor with motor assembly
  • High-voltage power source shut off

Detection Time:

  1. -
  • Harness or connector
  • HV air conditioning wire
  • Compressor with motor assembly
  • Hybrid vehicle control ECU
  • Battery state sensor assembly
 Memorized Air Conditioner A
DTC DETECTION CONDITION COMBINATION TABLE

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnosis Condition Ignition switch ON (READY) ◦ ◦ ◦
Malfunction Error in communication line between the hybrid vehicle control ECU and compressor with motor assembly ◦ - -
Open in communication line between the hybrid vehicle control ECU and compressor with motor assembly - ◦ -
High-voltage power source shut off - - ◦
Detection Time - - -
Trip Count 1 trip 1 trip 1 trip

HINT: 

If the conditions of either of these patterns are detected, a DTC will be stored.

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