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:
MIL Circuit Troubleshooting
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
PCM Power and Ground Circuit Troubleshooting
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
VTEC System Oil Pressure Troubleshooting
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:
DTC B1C56, B1C58
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.
DTC (Front Seat Heater Control Unit)
NOTE :
If you are troubleshooting multiple DTCs, be sure to follow the
instructions in B-CAN System Diagnosis
Tes
EPS System Description - Motion Adaptive-EPS Control
Overview
Motion adaptive-EPS control performs the steering torque correction control
coordinated with VSA system for
stabilizing the vehicle when the steering is unstable. The EPS system determines
the state of the vehicle based
on the data calculated by the VSA modulator-control unit, and the dat
