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Trouble Godes - diagramas.diagram...

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VOLVO Model: 850 2,O 850 2,3/2,5 850 2,5 20V 960 2,5/3,0<br />

Year: 1990-95<br />

Engine code: B5202S, B5204T, B5234T, B5234T4, B5234T5,<br />

B5252S, B5254S, B6254F, B6304F<br />

System: Bosch Motronic 1.8 Bosch Motronic 4.3<br />

Siemens Fenix 5.2<br />

I Engine management I<br />

850 - engine bay, RH front<br />

General information<br />

Refer to the front of this manual for general test conditions,<br />

terminology, detailed descriptions of wiring faults and a<br />

general trouble shooter for electrical and mechanical faults.<br />

<strong>Trouble</strong> codes are displayed by the LED on the data link<br />

connector (DLC).<br />

The ECM fault memory can also be checked and erased<br />

using diagnostic equipment connected to the data link<br />

connector (DLC).<br />

Accessing<br />

Ensure ignition switched OFF.<br />

Open cover on black data link connector (DLC).<br />

Insert selector cable in socket 2 [I].<br />

Switch ignition ON.<br />

Depress test button for approximately 1 second rn [2].<br />

Count LED flashes rn 131. Note trouble code.<br />

Each trouble code consists of three groups of flashes m.<br />

A 3 second pause separates each group H [A].<br />

For example: <strong>Trouble</strong> code 223 displayed - idle air<br />

control (IAC) valve.<br />

Repeat switch operation rn 121. Note trouble codes.<br />

Compare with trouble code table.<br />

Switch ignition OFF. Rectify faults as necessary.<br />

960 - engine bay, LH rear

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