(LC) Response Code 1-3-1

LC. 1-3-1 Set+

Response Code Information
Response code should be posted when the SET+ switch is pressed with the selector switch in the ON position. Fault tracing begins with LC1.

LC1. Response Code Test

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

If response code 1-3-1 is not posted:
Other response codes LC2.


LC2. Other Response Codes

Check whether either code 1-1-3, 1-2-3, or 2-1-3 is posted.

If none of the response codes is posted:
Fuse check LC3.

If one of the response codes is posted:
Selector switch test LC5.


LC3. Fuse Check






Check that fuse 19 in the central electronics module (in-car) is intact.
If fuse is intact:
Test power supply to selector switch LC4.

If fuse is blown:
Check cables between: fuse 19 and selector switch terminal 2, fuse 19 and control module terminal 1B, selector switch terminal 1 and brake valve.

Automatic transmission: brake valve and control module socket terminal 9E, manual transmission: brake valve and clutch valve, manual transmission: clutch valve and control module socket terminal 9E.

Selector switch terminal 3 and control module socket terminal 6E, selector switch terminal 4 and control module socket terminal 8E, selector switch terminal 5 and control module socket terminal 4E, for short circuit to ground, according to QA3. (Q) Other Electrical Fault Tracing


LC4. Test Of Power Supply To Selector Switch






Ignition off.
Disconnect selector switch.
Ignition on.
Using a voltmeter, measure voltage between selector switch connector terminal 2 and ground.
Voltmeter should display battery voltage.

If reading is OK:
Selector switch test LC5
.
If reading is not OK:
Check the cable between fuse 19 and selector switch terminal 2 for breaks, according to QA2.


LC5. Selector Switch Test







Selector switch connected.
Ignition on.
Selector switch in ON position.Using a voltmeter, measure voltage between selector switch connector terminal 5 and ground.
Voltmeter should display battery voltage when the SET button is pressed and 0 volts when it is not.

If readings are OK:
Test of power supply to control module LC7.

If readings are not OK:
Selector switch connector test LC6.


LC6. Selector Switch Connector Test






Ignition off. Service selector switch connector terminals 2 and 5 for contact resistance and oxidation, according to QA6, and for loose connections, according to QA5.

Selector switch connected.
Ignition on.
Selector switch in ON position. Using a voltmeter, measure voltage between selector switch connector terminal 5 and ground.
Voltmeter should display battery voltage when the SET button is pressed.

If reading is OK:
Test of power supply to control module LC7.

If reading is not OK:
Try a new selector switch.



LC7. Test Of Power Supply To Control Module






Control module disconnected.
Selector switch connected.
Ignition on.
Selector switch in ON position.Using a voltmeter, measure voltage between control module socket terminal 4E and ground.
Voltmeter should display battery voltage when the SET button is pressed.

If reading is OK:
Control module connector test LC10.

If voltmeter reads about 0 volts when SET button is pressed:
Test cable between selector switch and control module LC9.

If voltmeter displays battery voltage even when SET button is not pressed:
Check the cable between selector switch connector terminal 5 and control module socket terminal 4E for short circuit to supply, according to QA4..



LC8. Test Of Cable Between Selector Switch And Control Module






Ignition off.
Disconnect control module.
Disconnect selector switch connector using an ohmmeter, measure resistance between selector switch connector terminal 5 and control module socket terminal 4E.
The ohmmeter should read about 0 ohm.

If reading is OK:
Connector test LC9.

If reading is not OK:
Check the cable between selector switch connector terminal 5 and control module socket terminal 4E for breaks, according to QA2.


LC9. Connector Test

Ignition off. Service selector switch connector terminals 2 and Sand control module socket terminal 4E for contact resistance and oxidation, according to QA6, and for loose connections, according to QA5.

Connect control module.
Ignition on.
Selector switch in ON position.
Check whether response code 1-3-1 is posted.

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

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