M45 V8-4.5L (VK45DE) (2006)
Operation steps
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 systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed using auto active test.