Infiniti G20 (P11). Manual — part 460
10
CHECK FAN SWITCH CIRCUIT
Do approx. 12 volts exist between each fan switch harness terminal and body ground?
RHA122H
MTBL0380
Yes or No
Yes
©
GO TO 12.
No
©
GO TO 11.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
MANUAL
Blower Motor (Cont’d)
HA-171
11
CHECK CIRCUIT CONTINUITY BETWEEN FAN SWITCH HARNESS TERMINAL AND RESISTOR HAR-
NESS TERMINAL
RHA123H
MTBL0381
OK or NG
OK
©
Check harness for short.
NG
©
Repair harness or connector.
12
CHECK FAN SWITCH AFTER DISCONNECTING IT
(Refer to Electrical Components Inspection.)
(HA-173)
OK or NG
OK
©
INSPECTION END
NG
©
Replace fan switch.
TROUBLE DIAGNOSES
MANUAL
Blower Motor (Cont’d)
HA-172
RHA909H
ELECTRICAL COMPONENTS INSPECTION
=NCHA0146
Fan Switch
NCHA0146S01
Check continuity between terminals at each switch position.
KNOB POSITION
Continuity between terminals
OFF
No continuity
1
4 — 5 — 6
2
3 — 5 — 6
3
2 — 5 — 6
4
1 — 5 — 6
Blower Motor
NCHA0146S02
Confirm smooth rotation of the blower motor.
I
Ensure that there are no foreign particles inside the intake unit.
RHA120H
Blower Resistor
NCHA0146S03
Check resistance between terminals.
Terminal No.
Resistance
(+)
(−)
3
1
Approx. 1.4 - 1.6
Ω
4
Approx. 2.5 - 2.8
Ω
2
Approx. 0.5 - 0.6
Ω
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
MANUAL
Blower Motor (Cont’d)
HA-173
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