Join Date: Nov 2006
Posts: 1
this is on an 03 civic ex with the sohc 1.7 vtec. the car will start and while at idle the check engine light will blink and the pgm-fi main relay (the blue one) will click at the same time. also when this happens the idle drops like the engine missfires. it will keep doing this while at idle. it will do it at a constant rate, and after it does it 14 times the check engine light stays on and the car goes into a rough idle. if you give it some throttle it will studder and missfire and slightly rev (approx 2-3k rpm) and not raise above that because of a missfire. also the tachometer reads zero when the CEL turns on.
Where should i start looking to solve this problem? anybody have a clue as to whats going on with the car? your help is greatly appreciated.
Join Date: Nov 2014
Posts: 2
Wow I have an '02 Civic EX coupe and I am having the same exact problems just as this post! Now mine has been replaced with two new PGM FI relays and same problems persist... What can this be?
Join Date: Jun 2007
Posts: 10,023
Any time the CEL comes on -- much can likely be learned by pulling the code(s). It sounds like the crank sensor or something fundamental.
The faulty relays were in 1988-1995 models. 1996 and later have a different design and a problem with the relay itself is very rare.
The ECU drives the relay. Relay clicking on and off when it shouldn't is because the ECU is doing it, in response to something.
Join Date: Nov 2014
Posts: 2
I can't pull no codes with the scanner, I guess have a problem there too? Scanner reads "it cant link/connect"
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2003, 87, civic, click, fi, honda, honds, idle, location, main, pgm, pgmf1, pgmfi, problem, problems, relay
Year of production: 2001, 2002, 2003, 2004, 2005 WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level,
model, and market.Honda Civic (2001 – 2005) – fuse box diagram
Passenger compartment
Passenger compartment fuse box
No.
A
Circuits
1
15
except Hybrid: Ignition Coils
15
Hybrid: Engine Control Module (ECM), Front Ignition Coils
2
20
Air Fuel (A/F) Ratio Sensor
3
10
Daytime Running Lights (DRL) Control Unit, Multiplex Control Unit
4
10
Air Fuel (A/F) Sensor Relay, Alternator, Camshaft Position (CMP) Sensor, Cruise Control Unit, Electrical Load Detector (ELD) Unit, Evaporative Emission Control (EVAP) Bypass Solenoid Valve, EVAP Canister Purge Valve, EVAP Canister Vent Shut Valve, Heated Oxygen Sensor (HO2S), Vehicle Speed Sensor (VSS), DC-DC Converter (Hybrid), Transmission Control Module (TCM), Third Heated Oxygen Sensor (HO2S)
5
—
—
6
7,5
Moonroof Control Unit, Moonroof Open and Close Relays, Power Window Relay
7
20
Moonroof Open and Close Relays
8
7,5
Audio Unit, Multiplex Control Unit, CarLink Interface Box (CarLink)
9
10
Occupant Position Detection System (OPDS) Unit (Side Airbag), Rear Window Wiper Intermittent Control Unit, Rear Window Wiper Motor, Wiper/Washer Switch
15
Hybrid: Engine Control Module (ECM), Rear Ignition Coils
10
7,5
Back-Up Light Switch (M/T), Electronic Power Steering (EPS) Control Unit, Gauge Assembly, Keyless Receiver Unit, Multiplex Control Unit, Security Control Unit, A/T Reverse Relay (A/T), CarLink Interface Box (CarLink), Shift Lock Solenoid (A/T)
11
7,5
ABS Modulator-Control Unit
12
7,5
Daytime Running Lights (DRL) Control Unit, Multiplex Control Unit
13
10
Supplemental Restraint System (SRS) Unit
14
10
A/C Compressor Clutch Relay, A/C Condenser Fan Relay, Blower Motor Relay, Heater Control Panel, Power Mirror Switch, Radiator Fan Relay, Recirculation Control Motor, Rear Window Defogger Relay
15
2
Security Control Unit
10
Security Control Unit
16
20
Heated Seat
7,5
Motor Control Module (MCM) Relay No.1
17
15
Fuel Pump, Engine/Powertrain Control Module (ECM/PCM), PGM-FI Main Relay No.2, Supplemental Restraint System (SRS) Unit
18
15
Accessory Power Socket
19
7,5
Hazard Warning Switch, Turn Signal/Hazard Relay
20
30
Hatch: Multiplex Control Unit, Windshield Wiper/Washer Switch, Windshield Wiper Motor
20
Multiplex Control Unit, Windshield Wiper/Washer Switch, Windshield Wiper Motor
21
7,5
Hybrid: Engine Control Module (ECM), Starter Cut Relay
22
20
Passenger’s Power Window Switch, Power Window Master Switch
23
20
Power Window Master Switch
24
20
Left Rear Power Window Switch
25
20
Right Rear Power Window Switch
Fuse Holder
7,5
Hybrid: Hot Restart Fan Relay
Relay
R1
except Hybrid: Starter Cut
R2
Tail Light
R3
Power Window
R4
Turn Signal/Hazard
Sedan, Coupe: Low Beam Cut RelayHatchback
PGM_FI Main Relay No.2 (Fuel Pump)Sedan, Coupe
Engine Compartment
Engine Compartment Fuse box
No.
A
Circuits
1
20
Condenser Fan Relay Motor, A/C Compressor Clutch Relay
2
15
except Hybrid: Taillight Relay, Dash Lights, Front Parking Lights, Front Side Marker Lights, Heater Control Panel, License Plate Lights, Taillights
10
Hybrid: Motor Control Module (MCM) Relay No.2
3
7,5
except Hybrid: Cargo Area Light, Ceiling Light/Spotlights Ignition Key Switch/key Light, Spotlights, Trunk Light
10
Hybrid: Ceiling Light, Ignition Key Switch/Key Light, Spotlights, Taillight Relay, Trunk Light
4
20
Radiator Fan Relay
5
10
Hazard Warning Switch
6
15
PGM-FI Main Relay No.1, Crankshaft Position (CKP) Sensor, Engine/Powertrain Control Module (ECM/PCM), Injectors, Idle Air Control (IAC) Valve, Immobilizer Control Unit-Receiver, PGM-FI Main Relay No.2, Camshaft Position (CMP) (TDC) Sensor, Injector Control Module, Injector Relay
7
15
Brake Pedal Position Switch, Horn Relay, Brake Lights, Brake Signals (to ABS Modulator-Control Unit, Engine/Powertrain Control Module (ECM/PCM), Multiplex
Control Unit)
8
20
ABS Modulator-Control Unit
9
10
Audio Unit, Data Link Connector (DLC), Gauge Assembly, Immobilizer Control Unit-Receiver, Keyless Receiver Unit, Multiplex Control Unit, CarLink Interface Box, Motor Control Module (MCM) (Hybrid), Transmission Control Module (Hybrid), Security Control Unit
10
40
ABS Modulator-Control Unit
11
30
Rear Window Defogger Relay
40
Coupe: Rear Window Defogger Relay
12
40
Blower Motor Relay
13
40
Fuses (Passenger Compartment): 7, 23
14
40
Fuses (Passenger Compartment): 2, 3, 5, 15, 16
40
Hybrid: Hot Restart Fan Relay, Fuses (Passenger Compartment): 2, 3, 5, 15, 16, Fuse (Engine Compartment): No. 60
15
15
Left Headlight, Daytime Running Lights (DRL) Control Unit, DRL Relay, Gauge Assembly, High Beam Indicator Light, Multiplex Control Unit
20
Left Headlight, Daytime Running Lights (DRL) Control Unit, DRL Relay, DRL Diode, Gauge Assembly, High Beam Indicator Light, Multiplex Control Unit
16
20
Power Door Lock, Multiplex Control Unit
17
15
Right Headlight, Daytime Running Lights (DRL) Relay, Multiplex Control Unit
20
Right Headlight, Daytime Running Lights (DRL) Control Unit, Multiplex Control Unit
18
60
Electronic Power Steering (EPS) Control Unit
19
80
Batter, Power Distribution
20
40
Ignition Switch (BAT)
Relay
R1
Radiator Fan
R2
A/C Compressor Clutch
R3
Rear Window Defogger
R4
Blower Motor
R5
Headlight No.1
R6
Horn
R7
Condenser Fan
R8
Headlight No.2
Engine Compartment Relay Box (Hybrid)
No.
A
Circuits
60
20
Radiator Fan Motor
Relay
R1
Hot Restart Fan
R2
PGM-FI Main No.2
Hatchback
Moonroof Close RelaySedan, Coupe
except Hybrid: Moonroof Open Relay, Moonroof Close Relay