Toyota Tundra Service Manual: Fuel Pump Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. REMOVE FUEL PUMP RELAY (F/PMP)

(a) Remove the fuel pump relay from the engine room relay block.

2. INSPECT FUEL PUMP RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 5	When no battery voltage is applied to terminals 1 and 2	10 kΩ or higher
3 - 5	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

If the result is not as specified, replace the fuel pump relay.

3. INSTALL FUEL PUMP RELAY

(a) Install the fuel pump relay to the engine room relay block.

Toyota Tundra Service Manual > Blind Spot Monitor System: Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors. DTC Code DTC Detection Condition Trouble Area U1331 Destination information of the main body ECU (multiplex network body ECU) and b ...

Toyota Tundra Owners Manual