Honda HR-V: A/C Signal Circuit Troubleshooting
1. A/C compressor clutch condition check.
- Start the engine, and let it idle.
- Turn the blower switch on.
- Turn the A/C switch on.
- Check the parameter(s) below with the HDS.
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Do the current condition(s) match the threshold?
YES
Go to step 2.
NO
Do the A/C system test.
2. A/C system check.
- Check the A/C system.
Does the A/C system operate?
YES
The A/C system circuit is OK.
NO
Go to step 3.
3. A/C compressor clutch circuit check.
- Turn the vehicle to the OFF (LOCK) mode.
- Turn the vehicle to the ON mode.
- Activate the A/C CLUTCH in the INSPECTION MENU with the HDS.
A/C CLUTCH
Is there a clicking noise from the A/C compressor clutch?
YES
The A/C compressor clutch circuit is OK. Do the A/C system test.
NO
Go to step 4.
4. Open wire check (A/C MG CLUTCH RLY CL- line).
- Turn the vehicle to the OFF (LOCK) mode.
- Jump the SCS line with the HDS.
SCS Short
- Disconnect the following connector.
PCM connector A (51P)
- Turn the vehicle to the ON mode.
- Connect terminals A and B with a jumper wire.
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Is there a clicking noise from the A/C compressor clutch?
YES
The A/C MG CLUTCH RLY CL- wire is OK. Update the PCM if it does not have the
latest software, or substitute a known-good PCM, then recheck. If the
symptom/indication goes away and the PCM was updated, troubleshooting is
complete. If the symptom/indication goes away and the PCM was substituted,
replace the original PCM.
NO
Check for poor connections or loose terminals at the A/C compressor clutch
relay and the PCM. If the
connections and terminals are OK, check the A/C compressor clutch relay. If
needed, repair an open in
the A/C MG CLUTCH RLY CL- wire between the PCM (A12) and the A/C compressor
clutch relay, or
other parts in the A/C systems.
READ NEXT:
1. Gauge control module check.
Turn the vehicle to the ON mode.
Do the gauge self-diagnostic function.
Does the MIL flash?
YES
Go to step 2.
NO
Substitute a known-good gauge control module, then r
1. Engine starting check.
Try to start the engine.
Does the engine start and idle smoothly?
YES
Go to the F-CAN circuit troubleshooting.
NO
Go to step 2.
2. Fuse check.
Turn the vehicle to the OF
Special Tools Required
Pressure Gauge Adapter 07NAJ-P07010A
A/T Low Pressure Gauge w/Panel 07406-0070301
A/T Pressure Test Hose 07AAJ-PY4A100
A/T Pressure Adapter 07MAJ-PY40120
Oil Pressure Hose
SEE MORE:
NOTE: Before you troubleshoot, review the general troubleshooting
information.
1. Problem verification:
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
Do the BRAKE LIGHT RELAY function test with the HDS.
Check for DT
NOTE:
Refer to the DTC code shown on the display, and then inspect the
connectors and terminals based on the
instructions in the table below.
The DTC may be stored due to the grounding failure or the power source
failure at the transmitting
control unit (the grounding inspection and the pow