Mitsubishi 3000GT Service Manual page 1281

FULL AUTO AIR CONDITIONING - Troubleshootina
CIRCUIT AND BENCH CHECK
1. Inspection of air conditioning control unit power source circuit
Ignition
switch (IG2)
I
I r
Troubleshooting Hints
l Air conditioning control unit terminal voltage
Terminal No. Signal name
53 Backup power source
Air conditioning control unit power
108,116
source
Air conditioning control unit Normally
107,115
ground
Fusible
link (6)
1
Air-conditioning control unit
Normally
ignition switch ON
TSB Revision
Junction block
(Multi-purpose fuse)
Condition
Terminal voltage
Battery positive
voltage
Battery positive
voltage
o v