Tundra 4WD V8-4.7L (2UZ-FE) (2003)
w/o Daytime running light:
CHECK INTEGRATION RELAY (DRIVER SIDE JUNCTION BLOCK) CIRCUIT
a. Disconnect the 1H, 1I, 1K, 1J and 1L driver side junction block connectors, and check the voltage or continuity of each terminal of the wire
harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.
If the result is not as specified, the integration relay junction block) may malfunction.
b. Reconnect the 1H, 1I,1K, 1J and 1N junction block connectors, and check the voltage of each terminal of the connectors
If the result is not as specified, the integration relay junction block) may malfunction.
c. Remove the integration relay from the driver side junction block, and check the voltage or continuity of each terminal on the junction block side.