Infiniti I35 (A33). Manual — part 548
RHA056GA
DIAGNOSTIC PROCEDURE
NHHA0226
SYMPTOM: Intake sensor circuit is open or shorted. (
or
−
is indicated on the display as a result of conducting
Self-diagnosis STEP-2.)
1
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND GROUND
Disconnect intake sensor harness connector.
Do approx. 5 volts exist between intake sensor harness connector M80 terminal No. 1 and ground?
RHA417H
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 4.
2
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP.
1. Disconnect auto amp. harness connector.
2. Check circuit continuity between intake sensor harness connector M80 terminal No. 2 and auto amp. harness connec-
tor M59 terminal No. 11.
RHA418HB
Continuity should exist.
If OK, check harness for short.
OK or NG
OK
©
GO TO 3.
NG
©
Repair harness or connector.
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TROUBLE DIAGNOSES
Intake Sensor Circuit (Cont’d)
HA-105
3
CHECK INTAKE SENSOR
Refer to HA-104.
OK or NG
OK
©
1. Replace auto amp.
2. Go to “FUNCTION CONFIRMATION PROCEDURE”, “Self-diagnosis”, HA-37 and per-
form self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG
©
1. Replace intake sensor.
2. Go to “FUNCTION CONFIRMATION PROCEDURE”, “Self-diagnosis”, HA-37 and per-
form self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
4
CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP.
1. Disconnect auto amp. harness connector.
2. Check circuit continuity between intake sensor harness connector M80 terminal No. 1 and auto amp. harness connec-
tor M59 terminal No. 1.
RHA419HB
Continuity should exist.
If OK, check harness for short.
OK or NG
OK
©
1. Replace auto amp.
2. Go to “FUNCTION CONFIRMATION PROCEDURE”, “Self-diagnosis”, HA-37 and per-
form self-diagnosis STEP-2.
Confirm that code No. 20 is displayed.
NG
©
Repair harness or connector.
Air Mix Door Motor PBR Circuit
DIAGNOSTIC PROCEDURE
NHHA0227
For description of air mix door motor circuit, refer to HA-61.
SYMPTOM: If PBR circuit is open or shorted. (−
or
is
indicated on the display as a result of conducting Self-diag-
nosis STEP-2.)
Perform diagnostic procedure for air mix door motor, mode
door motor and intake. Refer to HA-55.
TROUBLE DIAGNOSES
Intake Sensor Circuit (Cont’d)
HA-106
HFC-134a (R-134a) Service Procedure
NHHA0228
SETTING OF SERVICE TOOLS AND EQUIPMENT
NHHA0228S01
Discharging Refrigerant
NHHA0228S0101
WARNING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting require-
ments of SAE J2210 (R-134a recycling equipment) or J2209 (R-134a recovery equipment). If acciden-
tal system discharge occurs, ventilate work area before resuming service. Additional health and safety
information may be obtained from refrigerant and lubricant manufacturers.
WJIA0614E
Evacuating System and Charging Refrigerant
NHHA0228S0102
WJIA0615E
GI
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LC
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SERVICE PROCEDURE
HFC-134a (R-134a) Service Procedure
HA-107
SHA922F
SERVICE PROCEDURE
HFC-134a (R-134a) Service Procedure (Cont’d)
HA-108
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