May 17, 2013 Updated: December 12, 2022 By: Abraham Torres-Arredondo Article ID: 461
In this tutorial, I'm gonna' show you how to try the fan relay and, more importantly, how to test the radiator buff relay's circuits in the under-hood merge boxwood.
The results of your tests bequeath help you troubleshoot the reason your Honda Accord's radiator winnow motor isn't working.
Although this info applies to any 1998-2001 4 cylinder Honda Accord, the basic testing procedure (in each test step) can by applied to whatsoever Honda.
Since in this tutorial we're only troubleshooting the winnow relay and its circuits, you'll find the radiator fan motor test here: How To Test The Radiator Fan Motor (Honda 2.2L, 2.3L).
Symptoms Of A Bad Radiator Fan Relay
If the radiator fan motor relay fails, the most obvious symptom that your Honda Accord testament experience is overheating attributable radiator fan not upcoming on.
You'll also see one (or Thomas More) of the following symptoms:
- Your temperature gauge will max out (as you're driving around).
- Your Honda will not re-start (once IT has overheated).
- Coolant (or water) boiling in the radiator's overflow tank as the engine runs or when you turn off the engine.
- Coolant boiling in the radiator's overflow tank and the radiator fan motor does not aerate.
The Fundamental principle Of The Radiator Fan Relay
The radiator fan electrical relay is located in the under-hood fuse box (see the illustrations in the image looke).
The under-tough fuse box is located towards the rear of the locomotive engine compartment.
The radiator fan relay socket (in the under-hood fuse box) has cardinal female terminals. From each one final provides a specific signal
Since we're gonna' make up testing these radiator devotee relay circuits (in the under-hood mix box), here's a brief description of each:
- Circuit labeled with the number 1.
- Battery power for the radiator fan centrifugal.
- Tycoo provided past fuse #57 (20 Amp) of the under-bonnet fuse box (go through image 3 of 4).
- Hot (+) all of the time.
- Circuit tagged with the numerate 2.
- Circuit that channels the battery powerfulness to the radiator lover motor when the electrical relay closes.
- Lap tagged with the number 3.
- Assault and battery major power for the radiator devotee relay's coil.
- Power provided by fuse #4 (7.5 Amp) of the left English dash fuse box (see image 4 of 4).
- Baking (+) only when with Key On Locomotive engine Forth (KOEO) or Key On Engine Squirting (KOER).
- Circuit labeled with the number 4.
- Circuit that feeds the radiator lover switch's 'On' or 'Sour' sign to the radiator fan relay.
OK, let's get testing.
First HERE: The Radiator Fan Motor Relay Tests
There are four separate tests in this tutorial and all one is designed to take the comprehensive novice through the whole troubleshooting see in a whole tone-by-step way.
Depending happening your level of racking/diagnosis experience, you can employ the tests to conform to your particular site, or start from Quiz 1.
Hither's a brief description of each.
- Checking The Radiator Fan Relay Power Circuits.
- We'll polish of the radiator fan relay from the subordinate-hood fuse box and check that circuits 1 and 3 cause power.
- TEST 1: Checking The Radiator Fan Relay Power Circuits.
- Bypassing The Radiator Fan Relay.
- Afterward confirming that the radiator fan relay is getting succus (TEST 1), the next step is to jumper circuits 1 and 2 with a jumper wire to see if the radiator buff motor comes on.
- TEST 2: Bypassing The Radiator Fan Relay.
- Bypassing The Radiator Fan Switch.
- Here we're gonna' bypass the radiator fan switch with a jumper cable and see if the radiator fan motor comes along.
- TEST 3: Bypassing The Radiator Fan Switch.
- Bench Testing The Radiator Fan Relay.
- This hold out test is optional and shows you how to bench test the fan motor relay.
- TEST 4: Bench Testing The Radiator Fan Relay.
How to Test Radiator Fan Relay on 2014 Gmc Sierra
Source: https://troubleshootmyvehicle.com/honda/2.2L-2.3L/how-to-test-the-radiator-fan-relay-1
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