Symptom Troubleshooting Index

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TROUBLESHOOTING TABLE

Symptom	Diagnostic procedure	Also check for
The blower motor does not run at all	Probable cause: A problem in the blower motor power or ground circuit Do BLOWER MOTOR CIRCUIT TROUBLESHOOTING	Blown fuse No. 10 (7.5 A) or No. 57 (30 A) in the under-dash fuse/relay box Faulty blower motor relay Faulty heater fan switch Poor ground at G501 (seepage 22-30) Poor ground at G502: With navigation (see CONNECTOR TO FUSE/RELAY BOX INDEX ), Without navigation (see CONNECTOR TO FUSE/RELAY BOX INDEX ) Poor or loose connections at the terminals
The blower motor runs, but one or more speeds are inoperative	Probable cause: A problem in the circuits between the heater fan switch and the blower resistor Do BLOWER MOTOR CIRCUIT TROUBLESHOOTING	Faulty blower resistor Faulty blower fan switch Poor or loose connections at the terminals
T blower motor runs with the fan switch off	Probable cause: A short in the blower motor ground circuit Do BLOWER MOTOR CIRCUIT TROUBLESHOOTING	Faulty heater fan switch Poor or loose connections at the terminals
The A/C compressor clutch and the A/C condenser/radiator fans are inoperative, but the blower and heater controls work	Probable cause: A/C pressure switch circuit malfunction Do A/C PRESSURE SWITCH CIRCUIT TROUBLESHOOTING	Powertrain DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Poor or loose connections at the terminals
The A/C compressor clutch does not engage, but the A/C condenser/radiator fans operate, and the blower and heater controls work	Probable cause: No power to the A/C compressor clutch Do A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING	Blown fuse No. 43 (7.5 A) in the under-dash fuse/relay box A/C system pressure is normal (see A/C SYSTEM TEST ) A/C thermal protector has continuity (see A/C COMPRESSOR CLUTCH CHECK ) Faulty heater fan switch Poor or loose connections at the terminals
The A/C condenser fan, or the radiator fan (or both) are inoperative with the A/C on	Probable cause: Condenser/radiator circuit malfunction Do the following troubleshooting as needed: See A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING See RADIATOR FAN CIRCUIT TROUBLESHOOTING See RADIATOR AND A/C CONDENSER FAN COMMON CIRCUIT TROUBLESHOOTING	Powertrain DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Poor or loose connections at the terminals
The A/C compressor clutch cycles rapidly on and off	Probable cause: A/C system is very low on refrigerant, indicating a possible leak Do the refrigerant leak check (see REFRIGERANT LEAK CHECK ) and repair any leaks. Replace the receiver/dryer (see RECEIVER/DRYER DESICCANT REPLACEMENT ), then recharge the system to specifications (see SYSTEM CHARGING )	If there is no leak and the refrigerant level is normal, do A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING and look for an intermittent problem
The A/C compressor clutch does not disengage when the A/C switch is off	Probable cause: The A/C compressor clutch circuit is on (energized) continuously, or the compressor clutch is mechanically jammed Do A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING and repair any circuit problems If the A/C compressor clutch circuit is OK, then do A/C COMPRESSOR CLUTCH CHECK and repair any problems with the compressor clutch	The A/C compressor relief valve. If it has vented refrigerant to the atmosphere, correct the problem with the compressor clutch or clutch circuit, then replace the relief valve (see A/C COMPRESSOR THERMAL PROTECTOR REPLACEMENT ) Poor or loose connections at the terminals
The A/C compressor relief valve has vented refrigerant	Probable cause: A restriction in the high-pressure side of the system, the A/C condenser/radiator fans are inoperative, or the A/C compressor clutch is not disengaging To troubleshoot the compressor clutch: Do A/C COMPRESSOR CLUTCH CIRCUIT TROUBLESHOOTING Do A/C COMPRESSOR CLUTCH CHECK To troubleshoot the condenser/radiator fans: Do A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING Do RADIATOR FAN CIRCUIT TROUBLESHOOTING Do RADIATOR AND A/C CONDENSER FAN COMMON CIRCUIT TROUBLESHOOTING To troubleshoot a high-side restriction: Recover A/C refrigerant (see REFRIGERANT RECOVERY ), then check the condenser, the receiver/dryer, and the liquid line for restrictions. Repair as needed. Recharge the system to specifications (see SYSTEM CHARGING )	Powertrain DTCs (see GENERAL TROUBLESHOOTING INFORMATION ) Poor or loose connections at the terminals
Driver's and passenger's side vent temperatures vary by more than 20°F (11°C)	Probable cause: The recirculation control door or the air mix door is malfunctioning Check the operation of the recirculation control cable and linkage (see MODE CONTROL CABLE REMOVAL/INSTALLATION ). Adjust or repair as needed Check the operation of the air mix door cable and linkage (see AIR MIX CONTROL CABLE REMOVAL/INSTALLATION ). Repair as needed	Faulty heater controls (see HEATER CONTROL PANEL DISASSEMBLY AND REASSEMBLY ) Clogged heater core Clogged evaporator Low refrigerant level
Insufficient heating	Check the coolant level (see COOLANT CHECK ) Check the radiator cap (see RADIATOR CAP TEST ) Check the coolant temperature during normal operation Check the heater core inlet hose temperature: If it is COLD, check for restrictions in the hose, a damaged or leaking thermostat, or a damaged or leaking water pump If it is HOT, check for restrictions in the heater core. Back flush or replace the heater core Check the operation of the air mix cable and linkage (see AIR MIX CONTROL CABLE REMOVAL/INSTALLATION ) Check the blower motor unit for obstructions Check for air leaks around the ducts and vents	Damaged cylinder head gasket