Fuel Sender Resistance Reading/MULTIMETER Set Incorrectly (SSM71927)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2014-07-24
Reference number: SSM71927

FUEL SENDER RESISTANCE READING/MULTIMETER SET INCORRECTLY

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM71927, Date of Issue: July 24, 2014

LAND ROVER:	Discovery 4/L319, Freelander 2/L359, Discovery 3/L319, Range Rover/L405, Range Rover Sport/L494, Defender/L316, Range Rover/L322, Range Rover Evoque/L538, Range Rover Sport/L320
CATEGORY:	Electrical

SERVICE INFORMATION

Symptom 203000 Basic Electrical

ISSUE

Content

When investigating customer reports for incorrect fuel gauge concerns the dealer technician may diagnose that the fuel senders are open circuit. This diagnosis may be incorrect depending on the multimeter settings selected by the technician during measurement.

CAUSE

The multi meter range maybe set at 'auto' and during a sweep of the sender from 50ohms to 998ohms the multi meter has to change its measurement range. For approximately 1 second, during the range switch over point, the multi meter display indicates an open circuit. This is incorrectly being diagnosed as a sender fault

ACTION

When measuring fuel sender resistance values with a multimeter please make sure it is not in the 'Auto' setting and is set to 'Manual'. This will help prevent incorrect diagnosis and unnecessary changes to fuel senders