Suzuki Baleno Manual page 1453

TABLE B-5 A/C SIGNAL CIRCUITS CHECK (VEHICLE WITH A/C)
1. A/C control module
INSPECTION
STEP
1 A/ C (Input) Signal Circuit Check
1) Check voltage at terminal E92-29 under the
following conditions.
Ignition switch ON and A / C switch
and / or heater blower switch OFF
Ignition switch ON and both A / C
switch and heater blower switch ON
Are check results as specified?
2 A/ C ON (Output / Cut) Signal Circuit Check
1) Check voltage at terminal E92-9 under the
following conditions.
While engine running and A / C
switch and / or heater blower switch
OFF (A / C is not operating)
While engine running at idle speed
and both A / C switch and heater
blower switch ON (A / C is operating)
Are check results as specified?
ENGINE GENERAL INFORMATION AND DIAGNOSIS (J18 ENGINE WITH WU TWC) 6-2-105
ACTION
: 10 – 14 V
: 0 – 1.5 V
: 0 – 1 V
: 10 – 14 V
YES
Go to Step 2. "Lg / B" circuit open or
short, poor E92-29 or
E97-4 connection,
evaporative temperature
is below 2.5 C (36.5 F)
or faulty A / C system.
A/ C signal circuits "G / R" circuit open or
are in good condition. short, Poor performance
of ECT sensor, TP
sensor, Engine start
signal inputted, poor
E92-9 or E97-8
connection or A / C
amplifier malfunction.
If none of the above
exists, substitute a
known-good ECM and
recheck.
NO
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