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Home >> Mitsubishi >> 2007 >> Galant DE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Air Conditioning) >> Automatic A/C Diagnosis >> Check At A/C-Ecu Terminal

Check At A/C-Ecu Terminal

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying C-15 & C-16 Terminal
G04259880Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TERMINAL VOLTAGE REFERENCE CHART

TERMINAL NO. CHECK ITEM CHECKING REQUIREMENTS NORMAL CONDITION
1 Air mixing damper control motor When the air mix damper is moved to the MAX. COOL position. 10 V
When the air mix damper is moved to the MAX. HOT position. 0.5 V
2 Air mixing damper control motor When the air mix damper is moved to the MAX. COOL position. 0.5 V
When the air mix damper is moved to the MAX. HOT position. 10 V
3 Back-up power supply Always Battery positive voltage
4 Mode selection damper control motor (DEF) When the damper is moved to the FACE position. 0.5 V
When the damper is moved to the DEF position. 10 V
5 Outside/inside air selection damper control motor (outside) When the damper is moved to the inside air recirculation position. 0.5 V
When the damper is moved to the outside air induction position. 0 V (when the motor is stopped)
6 Outside/inside air selection damper control motor (inside) When the damper is moved to the inside air recirculation position. 0 V (when the motor is stopped)
When the damper is moved to the outside air induction position. 0.5 V
8 Rear defogger relay Ignition switch: ON Battery positive voltage
9 Front blower relay Ignition switch: ON Battery positive voltage
10 A/C compressor relay A/C compressor relay: ON Battery positive voltage
11 Mode selection damper control motor (FACE) When the damper is moved to the FACE position. 10 V
When the damper is moved to the DEF position. 0.5 V
12 A/C pressure sensor Ignition switch: ON 5 V
16 Potentiometer power supply Ignition switch: ON 5 V
17 Power transistor (BASE) When the blower speed selection dial shows Maximum air volume. 1 V
18 Power transistor (COLLECTOR) When the blower speed selection dial shows Maximum air volume. 12.1 V
19 Photo sensor Ignition switch: ON 5 V
20 Sensors and potentiometers ground Always 0 V
21 Mode selection damper control motor potentiometer input When the damper is moved to the FACE position. 4 V
22 Interior temperature sensor Ignition switch: ON 5 V
23 Ambient temperature sensor input When sensor temperature is 25°C (77°F) [4 kΩ] 1.9 V
24 Air thermo sensor input When sensor temperature is 25°C (77°F) [1.5 kΩ] 2.2 V
25 Photo sensor ground Ignition switch: ON 0 V
26 A/C pressure sensor at 2.6 MPa 3.9 V
27 Ground Always 0 V
28 Power supply to the ignition switch (IG2) Ignition switch: ON Battery positive voltage
29 Air mixing damper control motor potentiometer input When the damper door is moved to the MAX. HOT position. 1.4 V
30 Illumination ground Always 0 V
31 ILL power supply Lighting switch: ON Battery positive voltage
34 A/C pressure sensor ground Always 0 V
36 Power supply to the ignition switch (ACC) Ignition switch: ON Battery positive voltage
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