Honda HR-V Owners & Service Manuals

Honda HR-V: A/C Condenser Fan High Speed Circuit Troubleshooting

Honda HR-V (2015-2021) Service Manual / HVAC / HVAC System - Testing & Troubleshooting / Troubleshooting / A/C Condenser Fan High Speed Circuit Troubleshooting

NOTE:

  • Do not use this troubleshooting procedure if the A/C compressor is inoperative. Refer to the symptom troubleshooting index - Refer to: Heating and A/C Systems Symptom Troubleshooting Index (Heating/Air Conditioning), or Climate Control System Symptom Troubleshooting Index (Climate Control).
  • If the A/C system is inoperable, the radiator and A/C condenser fans are controlled based only on engine coolant temperature.
  • Before doing symptom troubleshooting, check for PGM-FI DTCs - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the CVT System (CVT).

1. Fuse check:

Check the following fuses.

HVAC System - Testing & Troubleshooting

Are the fuses OK?

YES

Go to step 2.

NO

Replace the fuse(s), and recheck. If the fuse(s) blows again, repair a short in the No. B23 (30 A) and/or No. B31 (7.5 A) fuse circuit(s).

2. A/C condenser fan low speed operation check:

  1. Jump the SCS line with the HDS.

NOTE: This step must be done to protect the PCM from damage.

  1. Disconnect the following connector.

PCM connector A (51P)

  1. Connect terminals A and B with a jumper wire.

HVAC System - Testing & Troubleshooting

  1. Turn the vehicle to the ON mode.

Do the A/C condenser and radiator fans run on low?

YES

Go to step 3.

NO

Go to radiator and A/C condenser fan low speed circuit troubleshooting - Refer to: A/C Condenser Fan High Speed Circuit Troubleshooting, or Radiator and A/C Condenser Fan Low Speed Circuit Troubleshooting.

3. A/C condenser fan high speed operation check:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Connect terminals A and B with jumper wires.

HVAC System - Testing & Troubleshooting

  1. Turn the vehicle to the ON mode.

Does the A/C condenser fan (and radiator fan) run on high?

YES

Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck.

NO

Go to step 4.

4. A/C condenser fan relay check:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Disconnect the jumper wires.
  3. Remove the A/C condenser fan relay from the under-hood fuse/relay box, and test it.

Is the relay OK?

YES

Go to step 5.

NO

Replace the A/C condenser fan relay.

5. Open wire check (+B SUB FAN line):

Measure the voltage between test points 1 and 2.

HVAC System - Testing & Troubleshooting

HVAC System - Testing & Troubleshooting

Is there battery voltage?

YES

The +B SUB FAN wire is OK. Go to step 6.

NO

An open in the +B SUB FAN wire. Replace the under-hood fuse/relay box.

6. Open wire check (IGP2 SUB line):

  1. Connect terminals A and B with jumper wire.

HVAC System - Testing & Troubleshooting

  1. Turn the vehicle to the ON mode.
  2. Measure the voltage between test points 1 and 2.

HVAC System - Testing & Troubleshooting

HVAC System - Testing & Troubleshooting

Is there battery voltage?

YES

Repair an open in the wire between the under-hood fuse/relay box and the PCM.

NO

An open in the IGP2 SUB wire. Replace the under-hood fuse/relay box.

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