Freelander td4 2005 - Heater/fresh air blower motor - not working

Hello, been working on this most of today reading the forum posts and trying the usual process of elimination.... I am puzzled

Heres what I have:
Freelander td4 2005 sallnaae7 5A463762.

1. extracted centrifugal fan (one horrid nut) and placed 12v battery across terminals - it turns fine, but, by the wiring it looks like it is a replacement (its a valeo unit).

2. Measured voltage at the fan plug: voltage is zero when fan switch is at the no fan position and
11.90V when at positions 1 and 2 - 3.4V when at position 4 ......

3. Fuse for fan motor in cab ok

4. No loose connections or shorted wires anywhere that I can see (and I've checked a few times now !)

5.. While messing about (my usual method) I noticed that when I press the switch that stops the ingress of outside air to the system (which presumably operates a flap of some sort down by the pollen filter). I can hear the flap motor struggling and then the light on the switch dims or goes out and then does not come on again if the ignition is switched back on. This, of course, may not be related to the fan....

Is there a relay for the fan somewhere that I should be checking?
(cant see it on the specs or web - and I AM getting a voltage at the plug..)

Any ideas greatly appreciated!

ps whoever specced the stupid bolts for the pollen filter needs a firm talking too...

thanks all
krgds
Rob

You haven't actually said what is wrong with the fan?
Presumably if it's working, then it's not that it's not working.

Is it a speed control issue? If so it'll be the resistor block. It's fitted next to the fan motor it's self. It's a cheap replaceable part.

The recirculation switch is probably due to a sticking motor or flap. I don't know why it stops working until the ignition is cycled though.

I'll look at the circuit diagram and post back.

Positions 1-3 on the switch feed voltage to the fan motor through the resistor pack.
Position 4 operates a relay that feeds the motor direct.

Thanks Nodge68 - there I was thinking I'd been all comprehensive ! - the fan does not turn when in vehicle - at all.

Just taken a few pics to be more helpful for others as follows

Axial fan (blower / heater motor)


resistor module JGM500010


engine bay fuses :




Cab fuses :




cheers all - going to put a few things back now - radio etc b4 it gets dark

thanks longdog

Have you checked for continuity/resistance to earth from the plug using your multimeter?

hi longdog - all ive tested is the voltage across the two pins of the plug that goes into the fan.
So you are suggesting measuring from where to where ?
cheers for your help
Rob

Does anyone know what the resistances should be on the fan resistor module ?

Rob Burns said:

hi longdog - all ive tested is the voltage across the two pins of the plug that goes into the axial fan.
So you are suggesting measuring from where to where ?
cheers for your help
Rob

Click to expand...

If you've tested across the two pins on the plug that proves there is an earth connection, I thought you may have earthed your test meter direct to the body or an earth point.
Are you sure the plug is making proper contacts with the motor, possibly rig up a bit of bridging wire to test in the car but not in situ?

Rob Burns said:

Does anyone know what the resistances should be on the fan resistor module ?

Click to expand...

Do you not get the fan running when set to speed 4? The power for speed 4 is taken from a different fuse (F8 in engine bay box, via a relay) than the other 3 speed settings (F4 passenger fuse box).

Resistances are as follows.
Speed 1 is: 2.8 Ohms
Speed 2 is: 1.32 Ohms
Speed 3 is: 0.27 Ohms.

These resistances are lower than most DMMs are able to measure.

thanks for that info Nodge68 - really handy - my meter does have resistance settings - but not below an ohm I think. Guess if resistance modiue is showing continuity between pins then fan should work....

hmmmm engine fuse box F8 is in fact .. missing - dont know why ... will refit tomorrow, see if fan works on position 4 and hope car does not catch fire

for thread info the part number for the fan resistance module is JGM500010 available new for from around £20 ... to around £60 on some sites.

I believe that the freelander may have had a new fuse box at some point - wonder if that might be a factor and whether to take cab fuse box out and refit.

hmmmmm

cheers for your support

Rob

longdog said:

If you've tested across the two pins on the plug that proves there is an earth connection, I thought you may have earthed your test meter direct to the body or an earth point.
Are you sure the plug is making proper contacts with the motor, possibly rig up a bit of bridging wire to test in the car but not in situ?

Click to expand...

ah - good thought - will try - thanks

does your have the resistors behind the fan speed switch?

teddywood1 said:

does your have the resistors behind the fan speed switch?

Click to expand...

hi - and thanks for your reply - dont think so - resistor module JGM500010 is behind the fan in the air flow - unless there are more ?

Rob Burns said:

ah - good thought - will try - thanks

Click to expand...

hi - longdog - tried connections to motor - no joy ...
Also - a wierd thing happened when I replaced fuse 8 in the engine bay (the 30A for a/c and (as I am told) for the fan on position 4 ) at first I got a wierd noise from somewhere under the dash - like a raspy buzzing - I hastily turned the fan switch off pos 4 and thenoise stopped. reset the ignition and it didnt happed again - fuses ok ..... oh dear me.

As an aside - if you are a learn on the job amateur like me - and if you are removing or replacing the fan then those three tiny 6m hex head screws which hold the fan in place are a pain.
make sure you place the screws in the holes on the fan before offering up to fit (pic) - didnt think of it first time - doh !


going to go quiet for a week or so now, as going away - will resume then - thanks for help so far - any thoughts in the meantime greatfully recieved - praps I should just rewire the fan and screw a nice big ugly new switch to the dash

Fixed .. but not by me (boohoo!)
Hello again all. Back to the hippo blower : a friend has FIXED the blower on my son's hippo while I was away, havnt seen it yet but apparently it was just a "bad earth" - which has been repaired.
How simple ..... !
Could anyone tell me what earth I should have been checking please ? doing that first would have saved a lot of swearing!
I will check forum for a wiring diag.
king regards to all

got Rave01 using this link: http://www.green-oval.com/data/lr/rave01.iso hopefully 02MY is relevent.
The description from this document about blower motor operation is below - as are relevent diags

------------------------------------------------------------
DESCRIPTION AND OPERATION [ from Rave 02MY=> ]

4.96 FREELANDER 02MY
HEATER BLOWER
DESCRIPTION
General

The heater is operated from three rotary controls located in the centre console. Two of the
controls operate the temperature and air flow distribution. The third control operates the four
speed blower motor.

A resistor pack is mounted on the RH side of the heater unit. The resistor pack supplies
reduced voltages to the blower motor for fan speed one, two, and three. Fan speed four
drives the blower motor at full speed with a direct 12V supply.
The blower motor will only operate when the ignition switch is in the 'ignition' position.

OPERATION
General

Feed from the positive battery terminal (C0192) is supplied to fusible link 1 of the engine
compartment fuse box (C0632) on an R wire. Fusible link 1 is connected in series with fuse
8 and fusible link 2, which are also located in the engine compartment fuse box.

Fusible link 2 (C0571) is connected to the ignition switch (C0028) by an NR wire. When the
ignition switch is turned to the 'ignition' position, current flows across the switch (C0028) to
fuse 4 of the passenger compartment fuse box (C0588) on an SU wire. Fuse 4 (C0586)
provides an ignition feed to the following on G then LGS wires:

_ The fresh/recirculated air motor (C0006).
_ The fresh/recirculated air switch (C0750).
_ The blower motor switch (C0058).

Blower Speed 1

If blower speed 1 is selected, current flows across the blower motor switch (C0058) to the
resistor pack (C0425) on an RK wire. The resistor pack (C0425) is connected to the blower
motor (C0056) by a GK then G wire. As current has to flow through the greatest value
resistor, the blower motor operates at slow speed.
The blower motor (C0056) is earthed on a B wire.

Blower Speed 2
If blower speed 2 is selected, current flows across the blower motor switch (C0058) to the
resistor pack (C0425) on an RY wire. The resistor pack (C0425) is connected to the blower
motor (C0056) by a GK then G wire. As current has to flow through the medium value
resistor, the blower motor operates at a slightly increased speed.

Blower Speed 3
If blower speed 3 is selected, current flows across the blower motor switch (C0058) to the
resistor pack (C0425) on an RG wire. The resistor pack (C0425) is connected to the blower
motor (C0056) by a GK then G wire. As current has to flow through the smallest value
resistor, the blower motor operates at an increased speed.

Blower Speed 4
If blower speed 4 is selected, current flows across the blower motor switch (C0058) to the
blower motor relay coil (C0153) on an RS wire. The relay coil (C0153) is earthed on a BS
then B wire. The energised blower relay allows a feed from fuse 8 of the engine
compartment fuse box (C0576) across the closed relay switch (C0153) directly to the blower
motor (C0056) on a GR then G wire. As current by-passes the resistor pack, the blower
motor operates at high speed.

Fresh/Recirculated Air
Fuse 4 of the passenger compartment fuse box (C0586) provides an ignition feed to the
fresh/recirculated air motor (C0006) and the fresh/recirculated air switch (C0750) on G then
LGS wires. When the switch is the normal (released) position, it provides an earth path for
the motor (C0006) via a Y wire. The motor will open the recirculation flap, allowing the heater
to use air drawn from outside the vehicle.

If the fresh/recirculated air switch is pressed, it provides an earth path for the motor (C0006)
via a K wire. The motor will now close the recirculation flap, allowing the heater system to
use recirculated air. The switch is mounted on the centre console and is earthed (C0750) on
a B wire.

----------------------------------------------------------
INTRODUCTION
1.10 FREELANDER 02MY
WIRE COLOUR CODES
General
The following list contains wire colour codes used on the vehicle harness's.
Code Colour
B Black
G Green
K Pink
LG Light green
N Brown
O Orange
P Purple
R Red
S Slate (Grey)
U Blue
W White
Y Yellow

longdog said:

Positions 1-3 on the switch feed voltage to the fan motor through the resistor pack.
Position 4 operates a relay that feeds the motor direct.

Click to expand...

I have a similar problem, can anyone tell me where this relay is located. Many Thanks JMC

some are on the back of the control knobs just take the knobs of there are a couple of screws undo them and the whole thing comes of , they are the old wire wound resistors and you will probably see one broken and you can get them of EBay

John1mac said:

I have a similar problem, can anyone tell me where this relay is located. Many Thanks JMC

Click to expand...

Hi there - Rave for MY02 says relay R176 is in the engine compartment fuse box - Actually looking at it again perhaps not - the fuse box is prob within the dotted line ...:

the relay is not shown on the fuse box diag

searching RAVE for R176 yields nothing I'm afraid ---