DTC Troubleshooting: 19

LKAS Control Unit DTC 19: A Problem with the Temperature Monitoring for the LKAS Camera

1. Clear the DTCs with the HDS.

1. Start the engine.

1. Set the temperature control dial to Max Cool, the mode control switch to Vent and the recirculation control switch to Recirculate.

1. Turn the A/C switch on and fun switch to Max, and running the air conditioning for 15 minutes or more.

1. Watch the adaptive cruise control (ACC)/LKAS indicator.

Does the adaptive cruise control (ACC)/LKAS indicator come on?

YES | - | Go to Step 6 .
NO | - | Intermittent failure, the system is OK at this time.■

1. Turn the ignition switch OFF.

1. Check for DTCs with HDS.

Is DTC 19 indicated?

YES | - | Go to Step 8 .
NO | - | Do the appropriate troubleshooting for the code indicated.■

1. Turn the ignition switch OFF.

1. Disconnect the LKAS control unit 26P connector and the LKAS camera 10P connector.

1. Turn the ignition switch ON (II).

1. Measure the voltage between body ground and LKAS camera 10P connector terminal No. 3 and No. 4 individually.

Is there battery voltage?

YES | - | Repair short to power in the wire between LKAS camera and LKAS control unit.■
NO | - | Go to Step 12 .

1. Turn the ignition switch OFF.

1. Check for continuity between body ground and LKAS camera 10P connector terminal No. 3 and No. 4 individually.

Is there continuity?

YES | - | Repair short to body ground in the wire between LKAS camera and LKAS control unit.■
NO | - | Go to Step 14 .

1. Check for continuity between LKAS control unit 26P connector terminal No. 11 and LKAS camera 10P connector terminal No. 4.

Is there continuity?

YES | - | Go to Step 15 .
NO | - | Repair an open in the wire between LKAS camera and LKAS control unit.■

1. Check for continuity between LKAS control unit 26P connector terminal No. 24 and LKAS camera 10P connector terminal No. 3.

Is there continuity?

YES | - | Go to Step 16 .
NO | - | Repair an open in the wire between LKAS camera and LKAS control unit.■

1. Turn the ignition switch ON (II).

1. Measure the voltage between LKAS control unit 26P connector terminal No. 7 and body ground.

Is there battery voltage?

YES | - | Repair short to power in the wire between LKAS camera and LKAS control unit.■
NO | - | Go to Step 18 .

1. Turn the ignition switch OFF.

1. Check for continuity between LKAS camera 10P connector terminal No. 6 and body ground.

Is there continuity?

YES | - | Repair short to body ground in the wire between LKAS camera and LKAS control unit.■
NO | - | Go to Step 20 .

1. Check for continuity between LKAS control unit 26P connector terminal No. 7 and LKAS camera 10P connector terminal No. 6.

Is there continuity?

YES | - | Check for loose terminals in the LKAS camera and LKAS control unit connectors, and repair if necessary. If no poor connections are found, replace the LKAS camera. ■
NO | - | Repair an open in the wire between LKAS camera and LKAS control unit.■