Car Harness and Pump Pinout for Audi: 3.0T, 4.0T, and SQ5

This is a pinout guide of the car’s harness and its respective use/wire colors. Please report any errors or differences you may find. This information is needed when upgrading pumps to Pierburg CWA100-3 and CWA150. It is normal to receive a SOFT CODE error when using some tools about the pump. This does not affect vehicle performance or create a check engine light.

For the CWA150, the fuse for the water pump is located on the fuse box next to the ECU. Under the hood, near the wipers firewall plastic cover.

Vehicle harness wire color guide

Audi 3.0T

• red is signal / yellow is positive(+) / brown is negative(-)

Audi 4.0T

• brown is Negative(-) / green-black is signal / red-white is positive(+)

Audi SQ5

• blue-yellow is signal / red-white is positive(+) / brown is negative(-)

Pump Pin Out Guide:

CWA100-3 PUMP PINS:

CWA150 PUMP PINS: