Service Hints

AIR CONDITIONING - (AUTOMATIC A/C)

A4 A/C DUAL PRESSURE SW
4 - 1 : Open above approx. 2.0 kg/sq.cm (28 psi, 196 kPa) or 32 kg/sq.cm (455 psi, 3138 kPa)

A3 A/C MAGNETIC CLUTCH AND LOCK SENSOR
4 - GROUND : Approx. 3.7 Ohm

A16 (A), A17 (B) A/C CONTROL ASSEMBLY
B - GROUND : Always approx. 12 volts
IG+ - GROUND : Approx. 12 volts with the ignition SW at ON position
HR - GROUND : Approx. 12 volts with the ignition SW at ON position and do not turn the blower motor Below 1 volts with the ignition SW at ON position and turn the blower motor
PSW - GROUND : Below 1 volts with the ignition SW at ON position
BLW - GROUND : Below 1.5 volts with the ignition SW on and turn the blower motor
S5 - SG : 4 - 6 volts with the ignition SW at ON position
AMH - AMC : 1.3 - 1.9 volts with the ignition SW off
AIF - GROUND : Approx. 12 volts with the FRESH SW on
AIR - GROUND : Approx. 12 volts with the RECIRC SW on
FACE - GROUND : Approx. 12 volts with the FACE SW on
DEF - GROUND : Approx. 12 volts with the DEF SW on
GND - GROUND : Always continuity

AIR CONDITIONING - (MANUAL A/C)

HTR RELAY
1 - 2 : Closed with the ignition SW on and the blower SW on

MG CLT RELAY
5 - 3 : Closed with the ignition SW on, the blower SW on and the A/C SW on or the heater control SW at DEF position

B4 BLOWER RESISTOR
6 - 1 : Approx. 1.17 Ohm
1 - 3 : Approx. 1.60 Ohm
2 - 6 : Approx. 0.47 Ohm