Hospitality Illumination Circuit

HOSPITALITY ILLUMINATION CIRCUIT

Description






Controls the lamp (ground side) by PWM signal (duty).


Component Function Check


1. CHECK ILLUMINATION CONTROL FUNCTION

CONSULT ACTIVE TEST
1.Turn ignition switch ON.
2.Select "HSPL ILLUMINATION" of TOTAL ILLUM C/U active test item.
3.While operating the test items, check the illuminations operation.





Are the illuminations turned ON/OFF?
YES- Hospitality illumination circuit is normal.
NO- .


Diagnosis Procedure


1. CHECK ILLUMINATION CONTROL OUTPUT

CONSULT ACTIVE TEST
1.Turn ignition switch ON.
2.Select "HSPL ILLUMINATION" of TOTAL ILLUM C/U active test item.
3.While operating the test items, check voltage between total illumination control unit harness connector and ground.





Is the measurement value normal?
Fixed at 12 V-Replace the total illumination control unit.
Fixed at 0 V-GO TO 2.

2. CHECK THE SYMPTOM

Check that each illumination fixed to ON or OFF.
Fixed OFF-GO TO 3.
Fixed ON-GO TO 5.

3. CHECK EACH ILLUMINATION POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect each illumination connectors.
3.Turn ignition switch ON.
4.Check voltage between each illumination harness connectors and ground.





Is the measurement value normal?
YES- GO TO 4.
NO- Check the hospitality lighting power supply circuit 3. Hospitality Lighting Power Supply Circuit 1.

4. CHECK ILLUMINATION CONTROL CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect the total illumination control unit connector.
3.Check continuity between the total illumination control unit harness connector and each illumination harness connectors.





Does continuity exist?
YES- Replace each illumination.
NO- Repair the harnesses or connectors.

5. CHECK ILLUMINATION CONTROL CIRCUIT FOR SHORT

1.Turn ignition switch OFF.
2.Disconnect the total illumination control unit connector and each illumination connectors.
3.Check continuity between the total illumination control unit harness connector and ground.





Does continuity exist?
YES- Repair the harnesses or connectors.
NO- Replace the total illumination control unit.