Hi guys. Been reading many of your posts and advice regarding a non starting 1990 V6. Mine has been imported from Japan so is Japan spec. That said there don't seem to be too many differences apart from which side the steering wheel is on. I did have a look at the UK Pajero forum but with no disrespect to them they don't seem anywhere near as knowledgeable. So I wondered if you would be kind enough to help?

The car cranks over but will not start. This problem happened suddenly with no indication of anything being wrong before hand. Using your advice I have done the following:

1. Checked for a spark. None at plugs or from the coil.
2. Measured Coil resistance at primary and secondary. Secondary seemed a little high so replaced the coil. No difference.
3. Checked the Power transistor - continuity seemed suspect, so changed that. I tested the new one - when connecting the + side of the 1.5v battery to term 1 the resistance between terms 2 and 3 dropped but not to nothing (same as the old one)anyway the new one made no difference.
4. Checked the voltage on the primary side of the coil (removed the connector and checked the voltage on the wire side) when the key is first turned to "on" it reads approx 5.5 to 6v and increases over say 15 secs to approx 8v where it stays.
5) If I leave the probes in the wire side connector when I crank the engine the voltage drops to almost zero. When I stop cranking after a few seconds I can hear the ECU click and the voltage returns to 8v.
6) Checking the ECU with an analogue meter, I get the continuous sweep pattern indicating the ECU has no logged faults and is OK.
7) Have checked the back of the ignition switch and it is clean with no carbon build up.
8) Recycled the connectors on the sub-fusible link that you guys say can corrode. Then checked the voltage by disconnecting the connector to the loom and grounding first the white wire then the blue/red one and both read 12.2v.
8) Have had a look inside the ECU and can see no signs of damage/burning/corrosion. the two dodgy resistors look fine and do not appear to be leaking.
9) I think I have found a relay in the ignition circuit. It clicks when I turn the key to "start". There are 4 connections at the bottom, a large gauge blue wire and Blue/red wire are connected on one side and a smaller gauge red/blue and black wire on the other half. I'm wondering whether this has simply worn out and will find a new one.

In the meantime I've run out of ideas. The thing thats puzzling me is the low voltage to the primary side of the coil and I feel I should resolve that before going to the distributor and ECU which seem to be the only two things left to check. Any suggestions?

Thanks in advance.