(LE) Response Code 1-3-2

LE. 1-3-2 Stop (Brake) Light Switch

Response Code Information
Response code should be posted when the brake pedal is depressed with the selector switch in the OFF position. Fault tracing begins with LE1..


LE1. Response Code Test

If response code 1-3-2 is posted:
Continue with response code 2-2-3.

If response code 1-3-2 is not posted:
Stop light test LE2.


LE2. Stop Light Test






Ignition on.
Press brake pedal. Stop light should turn on.

If stop light turns on:
Test power supply to control module LE7.

If stop light does not turn on:
Fuse check LE3.


LE3. Fuse Check






Check that fuse 3 in the central electronics module (inside the car) is intact.

If fuse is intact:
Test power supply to stop light switch LE4.

If fuse is blown: Check cables between: fuse 3 and stop light switch terminal 1, stop light switch terminal 2 and stop lights, stop light switch terminal 2 and transmission control module stop light switch terminal 2 and cruise control system control module terminal 6B for short circuit to ground, according to QA3. (Q) Other Electrical Fault Tracing


LE4. Test Of Power Supply To Stop Light Switch






Ignition off.
Disconnect stop light switch.
Ignition off. Using a voltmeter, measure voltage between stop light switch connector terminal 1 and ground.
Voltmeter should display battery voltage.

If reading is OK:
Stop light switch test LE5.

If reading is not OK:
Check the cable between fuse 3 and stop light switch connector terminal 1 for breaks, according to QA2.


LE5. Stop Light Switch Test






Stop light connected.
Ignition on.Using a voltmeter, measure voltage between stop light switch connector terminal 2 and ground. Voltmeter should display battery voltage when the brake pedal is depressed more than 8-14 mm.

If reading is OK:
Stop light bulb test LE6.

If reading is not OK:
Try a new stop light switch.


LE6. Stop Light Bulb Test






Check that stop light bulbs are intact. Replace if necessary.
Ignition off.
Disconnect stop light switch.Using an ohmmeter, measure the resistance between stop light switch connector terminal 2 and ground.
The ohmmeter should read about 0 ohm.

If reading is OK:
If bulbs were replaced: The response code was not posted because the bulbs were burned out.
If bulbs were not replaced: Try a new bulb failure warning sensor.

If reading is not OK:
Check the cable between stop light switch terminal 2 and stop light bulbs for breaks according to QA2.

If cable is intact:
Try a new bulb failure warning sensor.


LE7. Test Of Power Supply To Control Module






Ignition off.
Stop light switch connected.
Brake pedal up.
Disconnect control module.
Ignition on. Using a voltmeter, measure voltage between control module socket terminal 6B and ground.
Voltmeter should display about 0 volts.

If reading is OK:
Test of signal cable resistance LE8.

If reading is not OK:
Check the cable between stop light switch and control module for short circuit to supply, according to QA4.


LE8. Test Of Signal Cable Resistance






Ignition off.
Disconnect control module.
Disconnect stop light switch. Using an ohmmeter, measure resistance between brake light switch connector terminal 2 and control module socket terminal 6B. The ohmmeter should read about 0 ohm.

If reading is OK:
Connector test LE9.

If reading is not OK:
Check cable between stop light switch connector terminal 2 and control module socket terminal 6B for breaks, according to QA2.


LE9. Control Module Connector Test

Ignition off. Service the control module socket terminal 6B and the stop light switch connector terminals 1 and 2 for contact resistance and oxidation, according to QA6, and for loose connections, according to QA5.

Connect control module.
Ignition on.
Check whether response code 1-3-2 is posted.

If response code is posted:
The response code was not posted because of poor contact in the control module connector.

If response code is not posted:
Try a new control module.