FBC System

Start engine and allow to reach normal operating temperature. With ignition off, connect Engine Signal Monitor (49 9200 162 ) and Adapter (49 U018 002 ) to emission control unit and feedback control unit. See Fig 1 .

Fig 1: Connecting Engine Signal Monitor & Adapter
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Test voltages should be as shown in the B2600 ECU & FCU TEST VOLTAGE tables in Fig 2 and Fig 3 . If voltage readings vary from specifications, check the corresponding sensor and related electrical wiring. Repair as necessary. See COMPONENT TESTING & INSPECTION . Recheck with engine signal monitor to verify repair has fixed problem.

Fig 2: ECU & FCU Test Voltage Table (Part 1 of 2)

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Fig 3: ECU & FCU Test Voltage Table (Part 2 of 2)

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