Suzuki GA413 Service Manual page 62

1B-8 AIR CONDITIONING
TERMINAL CIRCUIT
A1 Power Source
A2 Ground
A3
A4 Dual Pressure Switch
A5
A6
A7 A7 A/C Switch A/C Switch
A8
ECM
A9 A9
(A/C cut signal)
A10
A/C CONTROLLER AND ITS CIRCUITS IN-
SPECTION
A/C controller and its circuits can be checked at couplers by mea-
suring voltage with the couplers connected.
CAUTION:
A/C controller cannot be checked by itself. It is strictly
prohibited to connect voltmeter or ohmmeter to A/C
controller with couplers disconnected from it.
VOLTAGE CHECK
1) Remove A/C controller from cooling unit.
2) Connect A/C controller couplers to A/C controller.
3) Check voltage at each terminal with couplers connected and
ignition switch ON.
NOTE:
As each terminal voltage is affected by the battery voltage,
confirm that it is 11V or more when ignition switch is ON.
1. A/C controller
NORMAL VOLTAGE
10 – 14 V
0 – 1 V
0 – 1 V
0 – 1 V
10 – 14 V
CONDITION
Ignition Switch ON
Ignition Switch ON
Ignition Switch ON
Blower fan Switch ON and A/C Switch ON at Igni-
tion Switch ON (A/C indicator light ON)
Blower fan or A/C Switch OFF at Ignition Switch
ON (A/C indicator light OFF)
Refer to "INSPECTION OF ECM AND ITS CIR-
CUIT in ENGINE AND EMISSION CONTROL CUIT" in "ENGINE AND EMISSION CONTROL
SYSTEM" Section