ACC Combination Switch Removal, Installation, and Test

SRS components are located in this area. Review the SRS component locations, and the precautions and procedures before doing repairs or service.

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Detailed information, notes, and precautions

2. Steering Wheel Trim - Remove

1.
Remove the upper trims and the lower trim together.

3. ACC Combination Switch - Remove


4. All Removed Parts - Install

1.
Install the parts in the reverse order of removal.

1. ACC Combination Switch - Test

ACC Combination Switch Internal Resistance Check:

1.
Measure the resistance between the ACC combination switch 12P connector (male terminals) terminals No. 2 and No. 5 according to the table.

If there is no resistance in one or more positions, replace the ACC combination switch.

Position
Resistance at normal ambient temperature
OFF (Released)
2.0?2.4 k?
MAIN (Pressed and held)
54.3?66.3 ?
CANCEL (Pressed and held)
165.0?201.6 ?
SET?(Pressed and held)
401.8?491.0 ?
RES?(Pressed and held)
802.7?981.1 ?





Distance/LKAS Switch Internal Resistance Check:

1.
Measure the resistance between the ACC combination switch 12P connector (male terminals) terminals No. 3 and No. 4 according to the table.

If there is no resistance in one or more positions, replace the ACC combination switch.

Position
Resistance at normal ambient temperature
OFF (Released)
2.0?2.4 k?
DISTANCE (Pressed and held)
401.8?491.0 ?
LKAS (Pressed and held)
54.3?66.3 ?





Switch Illumination Circuit Check:

1.
Check the LED for illumination by applying power and ground to the terminals according to the table.

NOTE: Important operating characteristic; diode bias cause a diode to fully conduct electricity in one direction (forward), while not at all in the opposite direction (reverse).

If the results are not as specified, replace the ACC combination switch.