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That's good to know, thank youbrinkie wrote:There is a great FAQ page about that.![]()
http://www.volvo-480-europe.org/volvo48 ... ment_panel
Every PCB from a 2.0L will fit as they are all VDO 734, for every 480 from MY 1991 onwards (the ones with 60 litre fuel tank, starting with CH 563100 in August 1990, note the error in the above picture) it will be a drop-in replacement; for a Turbo you have to cut one pin off the PCB.
At a pinch, you can use every PCB provided it has the flat cable soldered to the PCB with a connector to fit the info centre switch. The earliest ones were the other way around and had the flat cable soldered to the info centre switch, with a connector to fit the PCB. Fuel economy and range readings may be off, temperatures and fuel gauge will be correct.
brinkie wrote:There is a great FAQ page about that.![]()
http://www.volvo-480-europe.org/volvo48 ... ment_panel
Every PCB from a 2.0L will fit as they are all VDO 734, for every 480 from MY 1991 onwards (the ones with 60 litre fuel tank, starting with CH 563100 in August 1990, note the error in the above picture) it will be a drop-in replacement; for a Turbo you have to cut one pin off the PCB.
At a pinch, you can use every PCB provided it has the flat cable soldered to the PCB with a connector to fit the info centre switch. The earliest ones were the other way around and had the flat cable soldered to the info centre switch, with a connector to fit the PCB. Fuel economy and range readings may be off, temperatures and fuel gauge will be correct.
89of480 wrote:That's good to know, thank youbrinkie wrote:There is a great FAQ page about that.![]()
http://www.volvo-480-europe.org/volvo48 ... ment_panel
Every PCB from a 2.0L will fit as they are all VDO 734, for every 480 from MY 1991 onwards (the ones with 60 litre fuel tank, starting with CH 563100 in August 1990, note the error in the above picture) it will be a drop-in replacement; for a Turbo you have to cut one pin off the PCB.
At a pinch, you can use every PCB provided it has the flat cable soldered to the PCB with a connector to fit the info centre switch. The earliest ones were the other way around and had the flat cable soldered to the info centre switch, with a connector to fit the PCB. Fuel economy and range readings may be off, temperatures and fuel gauge will be correct.
The mileometer doesn't appear to work on my clocks or the trip counter, they haven't moved at all, but all functions of the info centre work as they should so hopefully the cluster should be of some use
You are welcomesam029 wrote: big thank you Robert, saved me a lot of time and money investing in more clusters and boards/ soldering.
Be careful not to drain your battery this way. Make sure you pick up power from a switched source. Even better: find out why there is no power to the fuse box. Usually the answer lies in a poor contact on the relay box.voltage at pin 3 on Grey harness : 0.15 V when ignition on / 0.07 ignition off. Checked earth that's fine, I wired up the ignition feed from the CD player, and the info centre has life ! But my VDO 734 board is not working, but the cluster i bought, this VDO board is working... I'm going to put a piggy back fuse from Cd player ignition to permanently feed the info centre, my battery feed for the CD player is dead, followed it to the fuse box there is no power regardless of fuse i put in there - this will also be piggy backed off a working 12v battery source.
The fuel bar graph is calculated from a variable resistor pushed up by a float in the tank, so it really doesn't matter if there's 48 or 60 litre capacity in the tank, the bar graph doesn't have an absolute reading anyway. Only the range and fuel economy calculations are off.One Q - I got the 40 L version Info centre board on the 60L version 480, range doesn't work as i've read, would the fuel readings be off as well or pretty accurate?
Code: Select all
amount in measured
tank resistance
48 60 40 +/- 5 ohm
36 45 60 +/- 2.5 ohm
24 30 80 +/- 3 ohm
12 15 115 +/- 3 ohm
9 9 150 +/- 5 ohm
Hi Robert : Alan, Cheersbrinkie wrote:You can calibrate the amount of fuel which the computer "sees", by filling up the tank completely, setting the info centre switch to FUEL AVG (second position), press the RESET button, keep it depressed while switching on the ignition, and then either set the reading to 48.0 or 59.0 litre (depending on what type of info centre is fitted), by adjusting the potentiometer inside the switch with a small screwdriver.
When the adjustment doesn't seem to function, you can check the potentiometer with an ohmmeter between pin 3 and 8 (ground) from the info centre switch, it should be variable between 0 and 47 kilo-ohm.
The adjustment range is limited. The adjustment is for fine tuning only, so the range can be properly calculated by the info centre computer. You cannot change a 48 litre tank info centre computer to a 60 litre tank by adjusting the potentiometer.
The fuel bar reading, however, is a relative reading and isn't affected whether a 48 or a 60 litre tank is fitted, and shouldn't be affected by the potentiometer inside the switch. Connecting the fuel tank sensor input to ground should give a full reading, 68 ohm should read 5 or 6 segments on the display. Leave it open and only the lower bar appears.
From the service manual:
Code: Select all
amount in measured tank resistance 48 60 40 +/- 5 ohm 36 45 60 +/- 2.5 ohm 24 30 80 +/- 3 ohm 12 15 115 +/- 3 ohm 9 9 150 +/- 5 ohm