RS 6 V8-4.2L Turbo (BCY) (2003)
Display on VAS 5051:
1 - Enter display group
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Using keypad -2-, enter "112" to select "Display group 112" and confirm entry with Q button.
Display on VAS 5051:
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Check display in display zone -1- for cylinder bank 1 (right) and in display zone 2 for cylinder bank 2 (left).
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Increase engine speed.
^
Exhaust gas temperature should increase.
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Switch off ignition.
If exhaust gas temperature readout remains constant, or if an implausible value is shown:
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Test voltage supply.
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Check wiring.
Testing voltage supply
Requirements for test:
^
Fuse for exhaust gas temperature sensor OK
Refer to Electrical Wiring Diagrams
^
Fuel pump relay OK
Note: Exhaust gas temperature sensors receive their power supply via fuel pump relay.
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Unplug brown connector -1- from Sensor -1- for exhaust temperature G235- and black connector -2- from Bank 2 Exhaust Gas Temperature
(EGT) Sensor 1 -G236-.