Lotus Evora - Fuel Pump Relay

Lotus Service Notes Section EMR
Page 59
Fuel Pump Relay
P0628 Fuel Pump “A” Control Circuit Low Voltage
P0629 Fuel Pump “A” Control Circuit High Voltage
Description
The fuel system is of the non-return type. The fuel pump is incorporated into the fuel tank module, which also
contains the level sensor, fuel pressure regulator and vapour pressure sensor. The ECM controls the fuel pump
operation via a relay, because of this the only fault diagnosis is of the fuel pump relay.
Component connections
Relay connector Description ECU Pin ECU Connector
1 Rear ignition relay (fuse R7) - -
2 Fuel pump relay control H2 48 Way (Right)
Monitor:
• Continuous
Enable Criteria:
• Ignitionon
Disable Criteria:
• None
Potential failure modes:
• P0628fuelpumprelaywiringopencircuitorshortedtoground
• P0628fuseR7
• P0629fuelpumprelaywiringshortedto12V
• Fuelpumprelayfailure
• ECUoutputcircuitfailure
Diagnostic Mask:
• TheMILwillbeilluminatedimmediatelyifafaultispresent.
2009/02