Mbmaring Posted April 23, 2008 Share Posted April 23, 2008 (edited) I have the engine malfunction light on and I figured out hoe to check the code and it is a 4 2 code and according to the owners manual it is fan clutch output fault. What does that mean?It is a ch 613 1999 model with a e7 400 hpOne thing I noticed to is that the AC clutch is not getting any power to engage. Edited April 23, 2008 by Mbmaring Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/ Share on other sites More sharing options...
Mackpro Posted April 23, 2008 Share Posted April 23, 2008 If this an E-TECH engine ( most 99 engines are), check fuse 41 in fuse box under hood ( on firewall,above drivers side front tire) If its good, unplug fan clutch solenoid and turn key on and you should have 12 volts at on of the 2 pin on the harness side plug. Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18500 Share on other sites More sharing options...
Mbmaring Posted April 23, 2008 Author Share Posted April 23, 2008 If this an E-TECH engine ( most 99 engines are), check fuse 41 in fuse box under hood ( on firewall,above drivers side front tire) If its good, unplug fan clutch solenoid and turn key on and you should have 12 volts at on of the 2 pin on the harness side plug.Yes it is a e-tech engine and you were right the fuse 41 was blown and I replaced it and it blew imediatly. I unpluged the fan clutch solonoid and it still blew the fuse. I wonder how I could trace down the wiring short? could it be a sender causing the problem? Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18502 Share on other sites More sharing options...
fjh Posted April 23, 2008 Share Posted April 23, 2008 Yes it is a e-tech engine and you were right the fuse 41 was blown and I replaced it and it blew imediatly. I unpluged the fan clutch solonoid and it still blew the fuse. I wonder how I could trace down the wiring short? could it be a sender causing the problem?Unplug the preasure sensor on the ac condenser the green one and try another fuse Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18504 Share on other sites More sharing options...
Mackpro Posted April 24, 2008 Share Posted April 24, 2008 Yes it is a e-tech engine and you were right the fuse 41 was blown and I replaced it and it blew imediatly. I unpluged the fan clutch solonoid and it still blew the fuse. I wonder how I could trace down the wiring short? could it be a sender causing the problem?I think fuse 41 also powers something else, I think the PTO harness on top of the transmission. I have had this problem before. I'll look at the wiring diagram in the morning and let you know. Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18513 Share on other sites More sharing options...
Mackpro Posted April 24, 2008 Share Posted April 24, 2008 I think fuse 41 also powers something else, I think the PTO harness on top of the transmission. I have had this problem before. I'll look at the wiring diagram in the morning and let you know.I enclosed a wiring diagram for fuse 41. We had some problems with wires rubbing and shorting to ground on to of trans. There are 2 plugs onto of trans, 1 says pto and the other is torque limit, make sure those wires are not shorted to ground. Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18527 Share on other sites More sharing options...
Mackpro Posted April 24, 2008 Share Posted April 24, 2008 I enclosed a wiring diagram for fuse 41. We had some problems with wires rubbing and shorting to ground on to of trans. There are 2 plugs onto of trans, 1 says pto and the other is torque limit, make sure those wires are not shorted to ground.My pic of diagram is 2 big to put here, will try to shrink it down later and put it on here. Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18528 Share on other sites More sharing options...
Mbmaring Posted April 24, 2008 Author Share Posted April 24, 2008 My pic of diagram is 2 big to put here, will try to shrink it down later and put it on here.You could email it to meMark@maringfarm.comThanks for the help Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18540 Share on other sites More sharing options...
Mackpro Posted April 25, 2008 Share Posted April 25, 2008 You could email it to meMark@maringfarm.comThanks for the helpI'll send it in the morning when I get 2 work, its on my work pc. Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18551 Share on other sites More sharing options...
Mbmaring Posted April 25, 2008 Author Share Posted April 25, 2008 I'll send it in the morning when I get 2 work, its on my work pc.Thanks! I got the diagram when it warms up a little I will trace that circut down. We are going to get a snow storm here today so I hate to start on anything. When is this winter going to end! Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18558 Share on other sites More sharing options...
Mbmaring Posted May 4, 2008 Author Share Posted May 4, 2008 I'll send it in the morning when I get 2 work, its on my work pc.Thanks much I go the problem fixed I noticed from the wiring diagram the fuel sender was on that circut so I unhooked it and the fuse did not blow any more Quote Link to comment https://www.bigmacktrucks.com/topic/3653-engine-fault-fan-clutch-output/#findComment-18808 Share on other sites More sharing options...
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