Hi all - this was originally posted on the old site by cigaretkretek. I have just fixed my tacho using this method so I thought I would re-word some of it and post it here.
Common Tacho issue with the Charade G100/G102.
• Soldering iron
• Soldering lead
• Solder wick
• Replacement Capacitors
• Some soldering knowledge
Remove the instrument panel from the dash board. Unplug the instrument connector and speedometer cable.
Remove the tachometer needle carefully – use a cloth with a flat screwdriver to prevent marking the gauge face. Unscrew the 2 screws under the needle. Underneath is a transparent plastic dash light reflector. Remove it. Unscrew 3 screws on the back of instrument that hold the tachometer board. Remove the tachometer drive assembly and board.
The most common issue is the capacitors. As they age their capacity decreases, this reduces their effectiveness in converting the signal from the ignition coil and driving the needle coil.
Refer to pic - replace capacitors (Elco) #3 and #4.
• Electrolytic Capacitor #3 6,8uf/16 volt (I have used 10uF/16 Volt as an alternative)
• Electrolytic Capacitor #4 1000uf/16 volt
Use the solder wick to remove the solder from the back of the PCB to remove the capacitors.
Note : Electrolytic capacitors are polarity sensitive - so ensure the replacements are oriented the same when soldering in place. After replacing the capacitors re-assemble the tachometer drive board and gauge face into the instrument panel.
Calibration of the Tachometer Needle:
Do not put the plastic instrument covers on yet - leave the instrument panel open. Re-connect the multi connector at the rear of the instrument assembly. Turn the key to ign. The oil and battery indicators will glow. Now place the tachometer needle on at 0 rpm – do this carefully. Start the engine – check operation.
If the tachometer does not work you may need to replace capacitors 1 & 2.
Re-connect the speedo cable, replace the covers and re-assemble the dash and enjoy your now working tachometer.
Daihatsu Charade Indonesia
Daihatsu Charade Magelang