Quote:
Originally Posted by kwren
I think the r62 diode is splitting the voltage causing a reduction by about 4 or 5 volts. This does not allow enough volts to actuate the starter solanid , but the bosch relay can be activated by less that 12 volts!
Are we lucky or what!!! If that wasn't the case, we many of us would be in trouble!
All this testing and speculative thinking is nice but the Bosch relay install takes a few minutes and we get back on the road again... anytime we want to go!
"Time will tell"
Keith  |
I have previously gone over the wiring diagram shown with the cruise control data and found that the start signal from the ignition switch connects at at the input side of the adapter. This means that the diode can not affect the voltage delivered to the starter solenoid via the ignition switch.
One diode grounds the inhibitor relay via the starter solenoid and when the starter solenoid is energised, the relay will in effect be presented with a short circuit. This is apparently part of the interlocking arrangements. It is not possible to ascertain how the overall interlocking system works without access to the CCU internal circuits. The system will be a belt and braces affair.
The second diode simply provides the relay with inductive spike suppression.