XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Fuel Pump Voltage, XJR

 
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Old 05-09-2019, 01:48 AM
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Default Fuel Pump Voltage, XJR

Anybody know what voltage is applied to the fuel pumps for an XJR?
Is is constant? I know that the pumps are variable speed and controlled using a PWM signal from the REM and additional fuel pump module for the XJRs second pump.
 
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Old 05-09-2019, 04:29 PM
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Originally Posted by paddyx350 View Post
Anybody know what voltage is applied to the fuel pumps for an XJR?
Is is constant? I know that the pumps are variable speed and controlled using a PWM signal from the REM and additional fuel pump module for the XJRs second pump.
Full battery voltage I believe. At least 10.5V for sure.
 
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Old 05-10-2019, 08:36 PM
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There will be pin out tests in one of the manuals but I can't tell you exactly where.

These should quote voltages.
 
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Old 05-12-2019, 01:16 AM
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The pin point tests don't give an expected voltage
I'm going to back probe with the engine running and see what I get for the left and right hand side pumps
I'm doing the pin point tests now for the wiring between the ECM and the REM and Pump Module 2 but have come across the 5 point torx on the ECM connector, so will have to get one of these before proceeding any further.
 
 
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