Toyota Sienna Service Manual: DRL Relay Circuit

DESCRIPTION

The Multiplex network body ECU controls the DRL No.2 relay

WIRING DIAGRAM

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

1. Connect the intelligent tester to DLC3.
2.  Turn the ignition switch ON and push the intelligent tester main switch ON.
3.  Select the item below in the ACTIVE TEST and then check that the relay operates.

BODY NO.1:

2 INSPECT DRL NO.2 RELAY

1. Inspect DRL No.2 Relay continuity.

Resistance

3 CHECK HARNESS AND CONNECTOR (POWER SOURCE)

1. Disconnect the connector from the instrument panel junction block assembly.
2.  Measure the voltage according to the value(s) in the table below.

Voltage

4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

1. Reconnect the connector to the instrument panel junction block assembly.

2. Measure the voltage according to the value(s) in the table below.

Voltage

5 INSPECT RELAY (DRL NO.3, DRL NO.4)

1. Inspect DRL NO.4 Relay continuity.

Resistance

2. Inspect DRL NO.3 Relay continuity.

Resistance

6 INSPECT DAYTIME RUNNING LIGHT RESISTER

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

Resistance

REPAIR OR REPLACE HARNESS OR CONNECTOR