Suzuki SX4 Service Manual page 259

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Step
11
A/C compressor relay circuit check
1) Measure voltage between "E01-47" wire terminal of
ECM connector and vehicle body ground under following
conditions respectively.
Voltage between "E01-47" terminal of ECM
connector and ground
While engine running and A/C switch turned OFF: 10
– 14 V
While engine running, A/C and blower speed
selector switch turned ON: 0 – 1 V
Is check result satisfactory?
12 A/C compressor relay check
1) Check A/C compressor relay referring to "Compressor
Relay Inspection: Automatic Type in Section 7B".
Is it in good condition?
13 A/C compressor relay circuit check
1) Remove A/C compressor relay with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between "BLK/
WHT" wire terminal of A/C compressor relay connector
and vehicle body ground.
Is voltage 10 –14 V?
14 A/C compressor relay check
1) Check A/C compressor relay referring to "Compressor
Relay Inspection: Automatic Type in Section 7B".
Is it in good condition?
Action
Engine General Information and Diagnosis:
Yes
Go to Step 12.
A/C compressor drive
circuit malfunction.
Go to Step 14.
"GRY" wire is open
circuit. If OK, substitute
a known-good ECM and
recheck.
1A-209
No
Go to Step 13.
Replace A/C
compressor relay.
"BLK/WHT" wire is open
circuit.
Replace A/C
compressor relay.

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