Pinpoint Test F: An Individual Demand Lamp Is Inoperative
Interior Lighting
Pinpoint Test F: An Individual Demand Lamp Is Inoperative
Normal Operation
When the battery saver relay is energized, voltage is supplied to the demand lamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Sun visor
- Interior lamp
- Body builder equipment
PINPOINT TEST F : 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.
F1 CHECK FOR VOLTAGE TO THE LAMP
- Ignition OFF.
- Disconnect: Inoperative Demand Lamp.
- Ignition ON.
- Measure the voltage between the inoperative demand lamp, harness side and ground as follows:
Vehicles With Rear Headliner
Inoperative Lamp Connector-Pin Circuit Front interior/map C929-3 CLN09 (YE/GN) Second row interior/map C981-3 CLN09 (YE/GN) Third row interior/map C901-3 CLN09 (YE/GN) Cargo C926-3 CLN09 (YE/GN) RH vanity mirror C906-1 CLN09 (YE/GN) LH vanity mirror C907-1 CLN09 (YE/GN)
Vehicles Without Rear Headliner (Except Cutaway)
Inoperative Lamp Connector-Pin Circuit Front interior/map C929-3 CLN09 (YE/GN) Cargo (part of the high mounted stoplamp) C475-2 CLN09 (YE/GN)
Cutaway Chassis Vehicles
Inoperative Lamp Connector-Pin Circuit Front interior/map C929-3 CLN09 (YE/GN) Body builder C3359-6 CLN09 (YE/GN)
Is the voltage greater than 10 volts?
Yes
For a vanity lamp, INSTALL a new sun visor in question. TEST the system for normal operation.
For the body builder connector, the vehicle is operating correctly. REFER to the body builder manual to continue diagnosis.
For all other demand lamps, GO to F2.
No
REPAIR circuit CLN09 (YE/GN) for an open. TEST the system for normal operation.
F2 CHECK FOR VOLTAGE TO THE LAMP USING THE CONNECTOR GROUND
- Measure the voltage between the inoperative demand lamp connector, harness side as follows:
Vehicles With Rear Headliner
Inoperative Lamp Connector-Pin Circuit Front interior/map C929-3 CLN09 (YE/GN) C929-2 GD133 (BK) Second row interior/map C981-3 CLN09 (YE/GN) C981-2 GD133 (BK) Third row interior/map C901-3 CLN09 (YE/GN) C901-2 GD133 (BK) Cargo C926-3 CLN09 (YE/GN) C926-2 GD133 (BK)
Vehicles Without Rear Headliner (Except Cutaway)
Inoperative Lamp Connector-Pin Circuit Cargo (part of the high mounted stoplamp) C475-2 CLN09 (YE/GN) C475-1 GD149 (BK/GY) Front interior/map C929-3 CLN09 (YE/GN) C929-2 GD133 (BK)
Cutaway Chassis Vehicles
Inoperative Lamp Connector-Pin Circuit Front interior/map C929-3 CLN09 (YE/GN) C929-2 GD133 (BK)
Is the voltage greater than 10 volts?
Yes
INSTALL a new interior lamp for the lamp in question. REFER to Interior Lamp Service and Repair. TEST the system for normal operation.
No
REPAIR the ground circuit in question for an open. TEST the system for normal operation.