Xterra 2WD V6-4.0L (VQ40) (2005)
Power Distribution Module: Symptom Related Diagnostic Procedures
Auto Active Test
DESCRIPTION
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In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to the following systems:
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Rear window defogger
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Front wipers
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Tail, license, front fog, and parking lamps
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Headlamps (Hi, Lo)
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A/C compressor (magnetic clutch)
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Cooling fan
OPERATION PROCEDURE
1. Close hood and front door RH, and lift wiper arms away from windshield (to prevent glass damage by wiper operation).
NOTE: When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn ignition switch ON and, within 20 seconds, press front door switch LH 10 times. Then turn ignition switch OFF.
4. Turn ignition switch ON within 10 seconds after ignition switch OFF.
5. When auto active test mode is actuated, horn chirps once.
6. After a series of operations is repeated three times, auto active test is completed.
NOTE: When auto active test mode has to be cancelled halfway, turn ignition switch OFF.
CAUTION: Be sure to perform BL-29, "Door Switch Check" when the auto active test cannot be performed. See: Body and Frame/Locks/Power
Locks/Testing and Inspection/Symptom Related Diagnostic Procedures/Diagnosis By Symptom/Symptom Diagnostic Procedures/Door Switch
Check
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following six steps activate in order. These six steps cycle three times before the auto active test
automatically terminates.
1. Rear window defogger on for 10 seconds.
2. Front wipers operate on low speed for 5 seconds then on high speed for 5 seconds.
3. License, tail, parking and fog lamps on for 10 seconds.
4. Headlamps on low for 10 seconds then high beams turn on and off 5 times.
5. A/C compressor (magnetic clutch) cycles on and off 5 times.
6. Cooling fan operates on low speed for 5 seconds then on high speed for 5 seconds.
Concept of Auto Active Test
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IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN communication line. Therefore, when auto
active test mode is activated successfully, CAN communication between IPDM E/R and BCM is normal.
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If any of the systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed using auto active test.