I have a 20003 fxst that has no power on the ignition side of the ignition switch. There is power on the acc. side. I replaced the circuit breaker, starter relay, system relay and checked the ignition fuse in the fuse box. I unplugged the ignition switch an jumped it, it worked on the acc. side but not the ignition side which leads me to believe the ig. switch is good. Please advise.
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All the other windows work ? Not a fuse , one fuse powers all the windows . Test for B+ voltage at the switch an the window regulator would be the proper diagnostic procedure . Do you own a volt meter ? know how to read a wiring diagram ? how to do basic automotive electrical testing . The Faint click you hear is probably a relay , which means the GEM - genaric electronic modual is energizing the window relay . The windows are computer controlled .
The GEM will activate the OTD Relay until one of the following conditions is met:
The LF regulator control switch is pushed to the UP position.
The LF regulator control switch is released (OFF position) and then moved to the down position (first detent) or one touch down (OTD) position (second detent).
Seven seconds have elapsed since the OTD was initiated.
A window regulator electric drive stall condition is detected on the one touch down sense line inputs.
The UP window operation is not controlled by the GEM. The feature is activated when the delayed accessory is active and the LF window regulator control switch is pressed to the UP position. The switch provides delayed accessory power to one side of the motor and ground to the other side through the one touch down relay. The one touch down relay is not active when the LF regulator control switch is in the UP position.
Passenger windows may be raised or lowered using the LF master control switches or the appropriate passenger window switch. Passenger window switches receive power when the delayed accessory relay is active and the LF remote lock-out switch is in the UNLOCK position. When in the LOCK-OUT position, the passenger windows are deactivated.
The GEM controls manual down and auto down window movement with the down window relay. The relay is activated by applying ground directly to one side of the down window relay coil, and deactivated by removing the ground signal.
The delayed accessory relay provides power for the operation of the power windows and the power moon roof. The delayed accessory feature is active when the ignition switch is in the RUN or the ACC position, or when the ignition switch is changed from RUN or ACC to the OFF/LOCK position and the LF and RF doors are closed.
The GEM will deactivate the delayed accessory feature when:
the LF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
the RF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
10 minutes have elapsed since the ignition switch was changed from ACC or RUN to the OFF/LOCK position.
LF door open warning switch (open circuit with door closed, grounded with door ajar).
RF door open warning switch (open circuit with door closed, grounded with door ajar).
Ignition switch RUN position (battery potential on both the RUN and RUN/ACC inputs).
Ignition switch ACC position (battery potential on the RUN/ACC input).
Ignition switch OFF/LOCK position (absence of battery potential on the RUN, RUN/ACC, and START inputs).
You have a direct short to ground on that power feed circuit . You need to find a power distribution diagram to see what all gets is power from that fuse . Isolate the circuits till the fuse doesn't blow any more , then trace out that circuit that blows the fuse .
Which Ignition fuse ? Which fuse box is it in ? under hood , passenger compartment ?
Ignition Switch RUN, START, RUN/START/ACCY
Ignition Switch RUN/ACC, RUN/START
Could be ignition switch problem , Chevy has had problems with them .
Sounds right to me. Follow the wire from the ignition switch. ie. the acc wire (one wire) should be getting power. That wire powers the radio circuit. i suspect it it feeding the or an ignition power circuit now.
That circuit breaker only has power with the ignition switch in the "ON" position. It does not have power in the ACC, START or OFF positions. The ORANGE wire leading from the ignition switch Pin "C" delivers the power to the Right Instrument Panel Junction Block where the window circuit breaker is located.
A bad ignition switch can cause this. Check for power at fuses F21 (20 Amp), F20 (10 Amp), F23 (10 Amp), and circuit breaker C1 (25 Amp) in the junction block with the ignition switch in the ON position. If these fuses and circuit breaker do not have any power with the ignition switch on, then the ignition switch is most likely defective. If this is the case, there also may be damage to the BLACK/ORANGE wire coming out f the ignition switch. Check this over for heat damage. You may have to replace the ignition switch connector.
The blower fan is powered by a 30 amp circuit breaker.Its in the box at the pass kick panel. Is it getting power through it? The blower relay is powered through the GAUGE fuse 7.5 amp. Check ALL the fuses. There is a 30 amp fuse that powers the ign switch also. If you get the blower working I think everything else will work.
relays are normally in the fuse panel on the left side of dash by knee.
Fuses and Circuit Breakers
Location and Values NOTE: The headlamp switch (11654) has an integral 20-amp circuit breaker.
The combination instrument panel fuse and circuit breaker panel contains most of the fuses and circuit breakers used in the system.
The fuses and circuit breakers are color-coded by amp rating.
The locations and values of the fuses and circuit breakers not contained in the panels are shown in the following chart.
Circuit Protection and Rating
Headlamps and High Beam Indicator
20 Amp. CB
Integral with Lighting Switch
Heated Back Window
16 GA Fuse Link
Power Windows, Power Seat, Power Door Locks
20 Amp. CB
Starter Motor Relay
Engine Compartment Lamp
25 Amp. CB
Lower Instrument Panel-Reinforcement