Toyota Tundra Service Manual: Starter Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. REMOVE STARTER RELAY (ST)

(a) Remove the engine room relay box cover.

(b) Remove the starter relay from the engine room relay block.

2. INSPECT STARTER RELAY

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

Standard Resistance:

Terminal Connection	Condition	Specified Condition
3 - 5	When battery voltage is not 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 relay.

3. INSTALL STARTER RELAY

Toyota Tundra Service Manual > Trailer Brake Control System: Stop Light Control Relay Malfunction (C1380)
DESCRIPTION The skid control ECU (brake actuator assembly) sends a stop light operation request signal to the stop light control relay. If the skid control ECU (brake actuator assembly) detects a malfunction in the stop light control relay circuit, the trailer brake control ECU (brake control with b ...

Toyota Tundra Owners Manual