Honda HR-V: HVAC System - Diagnostics
DTC TROUBLESHOOTING
DTC INDICATOR 2 : HVAC CONTROL UNIT INTERNAL ERROR
1. Problem verification:
- Clear the history DTCs.
- Do the Self-Diagnostic Function.
- Checking for DTCs.
Does the RECIRCULATION indicator blink twice?
YES
Replace the HVAC control unit.
NO
Intermittent failure, the system is OK at this time.
DTC INDICATOR 3 A PROBLEM IN THE RECIRCULATION CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR
1. Problem verification:
- Clear the history DTCs.
- Do the Self-Diagnostic Function.
- Checking for DTCs.
Does the RECIRCULATION indicator blink twice?
YES
Replace the HVAC control unit.
NO
Intermittent failure, the system is OK at this time.
DTC INDICATOR 3 A PROBLEM IN THE RECIRCULATION CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR
1. Problem verification:
- Clear the history DTCs.
- Do the Self-Diagnostic Function.
- Checking for DTCs.
Does the RECIRCULATION indicator blink three times?
YES
Go to step 2.
NO
Intermittent failure. Check for loose wires or poor connections on the recirculation control motor circuit.
2. Open wire check (F/R MTR(REC)/M-REC line):
- Turn the vehicle to the OFF (LOCK) mode.
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Inspection & Adjustment
A/C SYSTEM CONTAMINATION INSPECTION
Inspection
NOTE:
If the A/C compressor failure is diagnosed, always use this inspection
to check the extent of
contamination in the A/C system.
The parts illu
SEE MORE:
Voltage Waveform Samples
NOTE: This is GENERAL information. This article is not intended to be
specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles where available.
EXAMPLE #1 - VOLTAGE CONTROLLED DRIVER
These two known-good waveform patterns are from
Fuel Tank Unit Disassembly and Reassembly (2WD)
Disassembly/Reassembly
The fuel filter should be replaced whenever the fuel pressure drops below the
specified value, after making sure
that the fuel pump and the fuel pressure regulator are OK.
NOTE: Unless otherwise indicated, illustrations used in the procedure are for
USA and Canada models
Fue
