Pinpoint Test J: An Individual Demand Lamp Is Inoperative

Interior Lighting

Pinpoint Test J: An Individual Demand Lamp Is Inoperative

Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) supplies voltage to the demand lamps when the battery saver relay is energized. The demand lamps are grounded at each lamp by the switch.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Demand lamp

PINPOINT TEST J : AN INDIVIDUAL DEMAND LAMP IS INOPERATIVE

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

J1 CHECK FOR VOLTAGE TO THE DEMAND LAMP

- Ignition OFF.

- Disconnect: Inoperative Demand Lamp.

- Ignition ON.

- Measure the voltage between the inoperative demand lamp, harness side and ground as follows:









Is the voltage greater than 10 volts?

Yes
GO to J2.

No
REPAIR circuit CLN09 (YE/GN) for an open. TEST the system for normal operation.

J2 CHECK THE DEMAND LAMP GROUND CIRCUIT FOR A SHORT TO GROUND

- Measure the voltage between the inoperative demand lamp, harness side and ground as follows:










Is the voltage greater than 10 volts?

Yes
INSTALL a new demand lamp for the inoperative lamp in question. TEST the system for normal operation.

No
REPAIR the ground circuit in question for an open. TEST the system for normal operation.