lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 13884 > < Initial Inspection and Diagnostic Overview|Page 13882
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ON (horn button is pressed) appears on screen.
NG -- REPLACE STEERING PAD SWITCH ASSEMBLY WITH MODULATOR
OK -- Continue to next step.

3. INSPECT HORN ASSEMBLY

(a) Remove the horn for low pitched horn See: Service and Repair/Low Pitched Horn/Removal or high pitched horn See: Service and

Repair/High Pitched Horn/Removal.

(b) Check operation of the horn.

OK:

NG -- REPLACE HORN ASSEMBLY
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (FRONT LIGHT ECU - HORN)

(a) Disconnect the B14 ECU connector.
(b) Disconnect the B6 or B10 horn connector.
(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:

for High pitched horn

for Low pitched horn

Initial Inspection and Diagnostic Overview|Page 13884 > < Initial Inspection and Diagnostic Overview|Page 13882