Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

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ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES) 6-133
Step Action Yes No
1 A/C condenser fan motor control circuit check
1) Remove ECM (PCM) cover.
2) Measure voltage between C51-3-24 and
vehicle body ground with ignition turned
ON.
Is voltage 10 – 14?
Go to Step 3. Go to Step 2.
2 A/C condenser fan motor control circuit check
1) Turn OFF ignition switch.
2) Check for fuse blowout at “HTR 15 A” fuse.
3) If OK, check A/C condenser fan motor relay
referring to “A/C Compressor Relay and
Condenser Fan Motor Relay” in Section
6E1.
Is check result as specified?
“YEL/GRN” wire or “YEL/
BLU” wire is open circuit. Faulty A/C condenser fan
motor relay.
3 A/C condenser fan motor control signal check
1) Start engine.
2) Turn ON A/C switch and heater blower
motor switch.
3) Measure voltage between C51-3-24 and
vehicle body ground with engine running.
Is voltage 0 – 1 V?
Go to Step 4. Go to Step 5.
4 A/C condenser control circuit check
1) Turn OFF ignition switch.
2) Check for fuse blowout at “A/C 25 A” fuse.
3) If OK, check A/C condenser fan motor relay
referring to “A/C Compressor Relay and
Condenser Fan Motor Relay” in Section
6E1.
Is check result as specified?
“RED/BLK” wire or “RED/
BLU” wire is open circuit.
If wire circuits are OK,
check A/C condenser fan
motor referring to “A/C
Condenser Fan Assem-
bly” in Section 1B. Faulty A/C condenser fan
motor relay.
5 A/C switch signal check
1) Turn ON A/C switch and heater blower
motor switch.
2) Measure voltage between E61-17 and vehi-
cle body ground with ignition switch turned
ON.
Is voltage 0 – 1 V?
Substitute a known-good
ECM (PCM) and recheck. Faulty “GRN/BLK” wire, A/
C evaporator temperature
is below 2.5°C, 26.5°F,
faulty refrigerant pressure
switch or faulty A/C sys-
tem referring to “HVAC
Control Module” in Sec-
tion 1B.