Toyota Tundra Service Manual: Short to GND or Open in Buzzer (C1ABE)

DESCRIPTION

DTC C1ABE is stored when the blind spot monitor sensor LH detects a short to ground or open in the RCTA buzzer (blind spot monitor buzzer) circuit.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• When checking for DTCs, make sure that the blind spot monitor system is turned on.
• Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

(a) Clear the DTCs.

Click here

(b) Recheck for DTCs and check if the same DTC is output again.

Click here

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

(a) Disconnect the P19 RCTA buzzer (blind spot monitor buzzer) connector.

(b) Disconnect the S5 blind spot monitor sensor LH connector.

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

Standard Resistance:

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

Standard Voltage:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Remove the RCTA buzzer (blind spot monitor buzzer) with a new or known good one.

for Double Cab:

Click here

for Crew Max:

Click here

(b) Clear the DTCs.

Click here

(c) Recheck for DTCs and check if the same DTC is output again.

Click here

OK:

No DTCs are output.

OK

END (RCTA BUZZER [BLIND SPOT MONITOR BUZZER] WAS DEFECTIVE)

NG

REPLACE BLIND SPOT MONITOR SENSOR LH