Workshop Manual
1A–116
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Condition Possible cause Correction
Magnetic clutch does not work — Refer to
Chart A
Chart A: Magnetic Clutch Does Not work
Step Action Value(s) Yes No
1 Is the fuse No.F–7 normal?
— Go to
Step 2
Replace the
fuse
2 Is the relay No.X–2 (compressor relay) No.X–8 (A/C
thermo relay) and No.X–1 (heater relay) normal?
— Go to
Step 3
Replace the
relay
3 Is there continuity between the pressure switch side
connector terminal No.C21–1 and No.C21–2?
— Go to
Step 5
Go to
Step 4
4 Pressure switch defective or refrigerant pressure
improper.
Pressure switch replaced or refrigerant pressure
adjusted?
— Go to
Step 3
—
5 1. Turn the ignition switch on. (the engine is run.)
2. Turn the air conditioner switch on.
Is the battery voltage applied between the harness side
connector terminal No.E2–1 and the ground?
— Go to
Step 7
Go to
Step 6
6 Magnetic clutch defective or earth defective.
Magnetic clutch replaced or earth replaced?
— Go to
Step 5
—
7 Is there continuity between the harness side connector
terminal No.X2–1 and No.E2–1?
— Go to
Step 9
Go to
Step 8
8 Repair an open circuit between terminal No.X2–1 and
No.E2–1.
Is the action complete?
— Go to
Step 7
—
9 Is the battery voltage applied between the harness side
connector terminal No.X2–5 and ground, No.X2–2 and
ground?
— Go to
Step 11
Go to
Step 10
10 Repair an open circuit between terminal No.X2–5 and
fuse No.F–7, No.X2–2 and fuse No.F–7.
Is the action complete?
— Go to
Step 9
—
11 Is the battery voltage applied between the harness side
connector terminal No.I20–18 and ground?
— Go to
Step 13
Go to
Step 12
12 Repair an open circuit between terminal No.I20–18 and
No.X2–4.
Is the action complete?
— Go to
Step 11
—
13 Is the battery voltage applied between the harness side
connector terminal No.C21–2 and ground?
— Go to
Step 15
Go to
Step 14
14 Repair an open circuit between terminal No.C21–2 and
fuse No.F–7.
Is the action complete?
— Go to
Step 13
—
15 Is the battery voltage applied between the harness side
connector terminal No.X8–5 and ground, No.X8–2 and
ground?
— Go to
Step 17
Go to
Step 16
16 Repair an open circuit between terminal No.X8–5 and
No.C21–1, No.X8–2 and fuse No.F–7.
Is the action complete?
— Go to
Step 15
—