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HOMESERVICE MANUALSBMW2011X6 35IREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 73 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)INTRODUCTION
2011 BMW X6 35i

Section 73 (Engine Controls - System & Component Testing): Introduction

2011 BMW X6 35iSECTION Introduction
WARNING: This page does not describe the selected car, but rather 37 other vehicles, including the 2005 BMW 760i, 2004 BMW 760Li, 2003 BMW Z8, 2003 BMW Z4, and 2003 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: BMW troubleshooting charts, guides and aids for diagnosis are integrated into BMW-specific service tools. BMW does not have or supply stand-alone guides for testing or troubleshooting. All OBD-II equipped BMWs are designed to be programmed and coded electronically. Diagnosis, coding, and programming on any OBD-II BMW may be carried out with BMW's DISplus, Group Tester 1 (GT1) or similar scan tool.

Before testing separate components or systems, perform procedures in BASIC DIAGNOSTIC PROCEDURES article. Since many computer-controlled and monitored components set a trouble code if they malfunction, also perform procedures in SELF-DIAGNOSTICS - EXCEPT 7-SERIES or SELF DIAGNOSTICS - 7-SERIES article.

NOTE: BMW diagnostic hardware, such as DISplus/GT1 as well as a reputable hand held multimeter should be used when testing inputs and components. Slack Tube Manometer Test Tool (99 00 0 001 410) should be used to troubleshoot crankcase ventilation valves. It is best to make the checks at the ECM connection, as this method includes testing the wiring harness. The correct universal adapter for engine and model being tested should be used. This will ensure the pin connectors and the harness will not be damaged. When installing the universal adapter to the ECM (located in the electronics box in the engine compartment), make sure the ignition is switched off. On Siemens MS45, allow at least 3 minutes to elapse after the key was set to OFF position before disconnecting ECM/TCM. This will allow sufficient time to complete the DM TL test. Voltage may be present (up to 3 minutes) causing damage to the ECM/TCM if they are disconnected during this time period.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.