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Air Injection Pump|Testing and Inspection|Page 3302 > < Air Injection Flow Sensor|Service and Repair
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Air Injection Pump: Testing and Inspection

Secondary Air Injection Pump Motor, Checking

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹› Secondary Air Injection (AIR) Pump Relay (J299) OK.

‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.

‹› Battery voltage at least 12.5 V.

‹› All electrical consumers switched off (radiator fan must NOT run during test).

‹› A/C switched off.

‹› The ignition switched off.

Test procedure

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Perform a preliminary check to verify the customers complaint. Refer to =>  See: Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Diagnostic Mode 09 - Read Vehicle Information.

Start diagnosis

-

Disconnect the secondary air injection hose - arrow -. 

-

Remove the center noise insulation fasteners - 1, 2, 3, 4  - and the center noise insulation panel.

Air Injection Pump|Testing and Inspection|Page 3302 > < Air Injection Flow Sensor|Service and Repair