Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

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6-1-148 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE)
3 A/C Compressor Control Signal check
1) Start engine.
2) Turn ON A/C switch and heater blower
motor switch.
3) Measure voltage between E61-21 and vehi-
cle body ground with engine running.
Is voltage 0 – 1 V?
Go to Step 4. Go to Step 5.
4 A/C Compressor Control Signal check
1) Turn OFF ignition switch.
2) Check for fuse blow at “A/C 25 A” fuse.
3) If OK, check A/C compressor relay referring
to “A/C Compressor Relay and Condenser
Fan Motor Relay” in Section 6E2.
Is check result as specified?
“RED/BLK” wire or “WHT/
RED” wire is open circuit.
If wire circuits are OK,
check A/C compressor
referring to “Magnet
Clutch Operation Check”
in Section 1B. Faulty A/C compressor
relay.
5 A/C Switch Signal check
1) Turn ON A/C switch and heater blower
motor switch.
2) Measure voltage between E61-28 and vehi-
cle body ground with ignition turned ON.
Is voltage 0 – 1 V?
Poor performance of ECT
sensor or its circuit. If they
are OK, substitute a
known-good ECM (PCM)
and recheck. Faulty “GRN/BLK” wire, A/
C evaporator temperature
is below 2.5°C, 36.5°F,
faulty refrigerant pressure
switch or faulty A/C sys-
tem referring to “HVAC
control module” in Section
1B.
Step Action Yes No