Hermie
Member
- Joined
- Mar 23, 2016
- Messages
- 20
Hi folks, I've got my manual from the other thread. But I still can't solve this one either. I've fixed a number of electrical problems on this, but I've still got a headache. The battery light is blinking, and the alternator won't charge the battery. When off, I get 12.5V at the battery, and then when running, it is the same. If I disconnect the battery terminal from the alternator, it gives me 0V while running.
The service manual troubleshooting chart only has one suggestion for flashing battery light, it says "Check Diodes + side". So I took the whole alternator apart and tested the diode block, but it was perfect(all 8 diodes have between 4.5 and 4.8 V drop in the right direction). Tested the windings, and all the ohms seemed right. The only thing I couldn't test was the IC regulator, so I put it all back together and took it to a shop. It gives them 14.5 Volts!
So now I'm looking again at the three control wires, IG, L, and P. L must be good because it is lighting the lamp (but flashing). IG is getting full battery voltage when ACC is on, just as expected. P still confuses me a little. It goes to the Safety Relay and I don't understand what it is supposed to do. I did replace the old crusty safety relay ($200 down the drain!), and got the same results.
I'm working on this puzzle as I type this, so any fast help would be very much appreciated! Let me know your thoughts, folks.
The service manual troubleshooting chart only has one suggestion for flashing battery light, it says "Check Diodes + side". So I took the whole alternator apart and tested the diode block, but it was perfect(all 8 diodes have between 4.5 and 4.8 V drop in the right direction). Tested the windings, and all the ohms seemed right. The only thing I couldn't test was the IC regulator, so I put it all back together and took it to a shop. It gives them 14.5 Volts!
So now I'm looking again at the three control wires, IG, L, and P. L must be good because it is lighting the lamp (but flashing). IG is getting full battery voltage when ACC is on, just as expected. P still confuses me a little. It goes to the Safety Relay and I don't understand what it is supposed to do. I did replace the old crusty safety relay ($200 down the drain!), and got the same results.
I'm working on this puzzle as I type this, so any fast help would be very much appreciated! Let me know your thoughts, folks.