You can test a relay with and without a 9 volt battery. If you apply 9 volts to it and it's sufficient to turn on the relay, the NO switch will close and then have continuity with common. If you don't apply voltage, the NO switch will be open and not have continuity with common. You can use these continuity and resistance checks to test a relay to see if it works.
under the radio, in the relay and and fuse box, gray relay
Most fuel pumps operate on 12-14.2 Volts. (system voltage). Keep in mind that most fuel pumps operate off a relay and the relay is turned on and off by the engine computer. Most computer control the GROUND circuit of the relay to power it on and off. It is fairly common to have to replace the fuel pump in the tank as the brushes wear out after about 100,000 miles
There are multiple relay races: 4x100, 4x100, distance medley, and other less used relays. Every relay has 4 members.
When the radiator fan relay fails on a vehicle, it can quickly overheat due to the lack of cooling. The fan is designed to kick on at specific temperatures controlled by the relay.
most common failures fuel pumps or pump relay eec relay, crank or cam sensors if no crank bad starter or security disabled
my ranger will not crank unless the clutch is pushin. could it be a relay
Usually when a starter solenoid/relay switch is bad, you will hear only a click and the starter will not spin (crank).
Its the solenoid (relay) that you are jumping. If i understand you correctly, it cranks when you cross the relay. Just ask for starter solenoid, and stick in on like the old one.
i had the same problem with mine. its the soleniod.
Bad ECM or ECM relay.
No , it would crank , but if there was no power getting to the electric fuel pump it would not start
Where is the ECCS RELAY LOCATED ON 1999 NISSAN MAXIMAType your answer here...
there are several reasons your car will not start. first does it crank? if not you have a neutral safety switch problem.this makes sure you are in park while attempting to start the engine. Since you mentioned the battery i can assume the engine does not crank. If you have an alarm there is a relay inside the alarm box that keeps the car from starting unless it is disarmed. this relay can go bad and after you disarm the alarm in does not make,keeping engine from starting. Please be more specific whit what the engine is doing or not doing.big difference from wont start to wont crank.
try a fuel relay
shut of the fuel relay and crank until it starts, then it will die. reconnect relay and your good to go
There could be several possible reasons why the brake lights stay on all the time on a 307. The most common reasons would be a bad relay or a bad switch.