The end of the Plug and Play MIMA, and MIMA2
MIMA introduction
MIMA Operation
MIMA Users Page
Installing MIMA with The Plug and Play harness
Installing MIMA with the pin replacement harness
The MIMA Joystick
The MIMA Display
The FAS system
Cable impedance problem with last MIMA systems.
Learning to drive with MIMA
Hardwired Harness
Level 1 Installation
2. Disassembly
3. Thread the Harness
4. Threading the Harness, Cont'
5. Opening the Harness
6. Level 1 Install (rear connections)
7. Fan Diodes Install
8. Battery Amp Monitor Rear Connections
9. Mounting the MIMA system in the car.
10. Level One wiring test.
11. Level 1 Check first power up
Other connections
Main Controller test points
Test 13.6V supply
Test 5V
+ - 12V supply test
Board operational check
12. The first MIMA operational test
13. Testing the fan control wiring
14. Confirming temp probe and fan control operation
Level 2 install
Theory of Operation

+ - 12V supply test

I will be asking you to test voltages on IC pins next. You need sharply pointed test probes to do this, as you must pierce the varnish that is coating the board and components. If your test lead slides off the pin, and shorts two pins, the IC could be damaged, so don't try to do this if you have shaky hands.

First measure the -12V on pin 11 of U4. It should measure -12V +- .2V. Then measure the +12V on U4 pin 4, it should measure +12V +- .2V.

If everything checks out to here, start the car.