Tundra 4WD V8-4.6L (1UR-FE) (2010)
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Fuel Pump Relay: Testing and Inspection
EFI Relay
1UR-FE ENGINE CONTROL SYSTEM: EFI RELAY: ON-VEHICLE INSPECTION
1. REMOVE INTEGRATION RELAY See: Ignition System/Ignition Relay/Testing and Inspection
2. INSPECT INTEGRATION RELAY (EFI)
NOTICE:
*
Some relays are built into the integration relay. The integration relay cannot be disassembled. If there is a malfunction in the
circuit of the integration relay, replace the integration relay.
*
The internal circuit of the integration relay is as shown in the illustration below. Inspect the integration relay using the following
procedures.
(a) Measure the resistance of the EFI No. 1 fuse.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(2) If the result is not as specified, replace the EFI No. 1 fuse.
(b) Measure the resistance of the EFI relay.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
