Nissan Juke Service and Repair Manual : B27A6, B27A7, B27A8, B27A9 mode door motor
DTC Logic
DTC DETECTION LOGIC
NOTE
:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to HAC-
51, "DTC Logic".
• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. HAC-52, "DTC Logic".
• If mode door motors DTC (B27A6 – B27A9) are detected, there is probably a disconnected connector or an open circuit in mode door motor drive power supply harness.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” mode of “HVAC” using CONSULT-III.
3. Check DTC.
Is DTC detected? YES >> Refer to HAC-71, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK MODE DOOR MOTOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect mode door motor connector.
3. Turn ignition switch ON.
4. Check voltage between mode door motor harness connector and ground.
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair harness or connector between mode door motor and fuse.
2.CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK MODE DOOR MOTOR
Check mode door motor. Refer to HAC-72, "Component Inspection".
Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-91, "Removal and Installation".
NO >> Replace mode door motor. Refer to HAC-100, "MODE DOOR MOTOR : Removal and Installation".
Component Inspection
1.CHECK MODE DOOR MOTOR
1. Remove mode door motor. Refer to HAC-100, "MODE DOOR MOTOR : Removal and Installation".
2. Check resistance between mode door motor terminals. Refer to applicable table for the normal value.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace mode door motor. Refer to HAC-100, "MODE DOOR MOTOR : Removal and Installation".
B27A2, B27A3, B27A4, B27A5 air mix door motor
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to HAC-
51, "DTC Logic".
• If DTC is displayed ...
Power supply and ground circuit
A/C auto AMP. : Diagnosis Procedure
1.CHECK SYMPTOM
Check symptom (A or B).
Which symptom is detected?
A >> GO TO 2.
B >> GO TO 5.
2.CHECK FUSE
1. Turn ignition switch OFF.
2 ...
Other materials:
Precaution
Precautions for Trouble Diagnosis
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
• Use a tester with open terminal voltage of 7.0 V or less.
• Turn the ignition switch OFF and disconnect the battery cable from the
negative terminal when
checking the harness.
Precautions fo ...
Replacing
Replace the wiper blades if they are worn.
Before replacing the wiper blades, the wiper should be in the fully up position
to avoid scratching the engine hood or damaging the wiper arm. To pull up the wiper
arm, see “Windshield wiper and washer switch” .
1. Lift the wiper arm away from the w ...
P0641 sensor power supply
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E38. Refer to Ground Inspection in GI-44, "Circuit
Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or r ...