Pinpoint Test A: The Courtesy Lamps Do Not Turn On With A Door Open
Interior Lighting
Pinpoint Test A: The Courtesy Lamps Do Not Turn On With A Door Open
Normal Operation
The Smart Junction Box (SJB) sends a voltage signal to each door ajar switch. The door ajar switch is open with the door closed. When the door is opened, the signal to ground is completed, indicating an open door to the SJB (Smart Junction Box).
When any door is opened or an unlock request from a programmed Remote Keyless Entry (RKE) transmitter is detected, the SJB (Smart Junction Box) provides voltage to the courtesy lamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- Body builder equipment
- SJB (Smart Junction Box)
PINPOINT TEST A : THE COURTESY LAMPS DO NOT TURN ON WITH A DOOR OPEN
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
A1 CHECK THE COURTESY LAMP OPERATION FROM THE INSTRUMENT PANEL DIMMER SWITCH
- Ignition OFF.
- Place the instrument panel dimmer switch in the DOME LAMP position.
Do the interior courtesy lamps illuminate?
Yes
GO to A2.
No
GO to Pinpoint Test C. Pinpoint Test C: The Interior Courtesy Lamp(s) Are Inoperative
A2 CHECK FOR VOLTAGE TO THE DOOR AJAR SWITCH
- Disconnect: Suspect Door Ajar Switch or Body Builder Connector C3359.
- Measure the voltage between the suspect door ajar switch or body builder connector, harness side and ground as follows:
Suspect Ajar Switch Connector-Pin Circuit LH front C2373-1 CPL26 (GN/VT) RH front C2374-1 CPL31 (WH) Side door (hinged) C816-1 CPL39 (YE) Side door (sliding) C398-1 CPL39 (YE) Rear door C4119-1 CPL36 (GN) Body builder C3359-5 CPL36 (GN)
Is the voltage greater than 10 volts?
Yes
For the body builder connector, REFER to the body builder manual to continue diagnosis.
For any door ajar switch, GO to A3.
No
GO to A4.
A3 CHECK FOR VOLTAGE TO THE DOOR AJAR SWITCH USING THE CONNECTOR GROUND
- Measure the voltage between the suspect door ajar switch connector, harness side as follows:
Suspect Ajar Switch Connector-Pin/ Circuit Connector-Pin/ Circuit LH front C2373-1 CPL26 (GN/VT) C2373-2 GD133 (BK) RH front C2374-1 CPL31 (WH) C2374-2 GD115 (BK/GY) Side door (hinged) C816-1 CPL39 (YE) C816-2 GD115 (BK/GY) Side door (sliding) C398-1 CPL39 (YE) C398-3 GD115 (BK/GY) Rear door C4119-1 CPL36 (GN) C4119-2 GD149 (BK/GY)
Is the voltage greater than 10 volts?
Yes
INSTALL a new door ajar switch in question. TEST the system for normal operation.
No
REPAIR the ground circuit in question for an open. TEST the system for normal operation.
A4 CHECK THE DOOR AJAR SWITCH CIRCUIT FOR AN OPEN
- Disconnect: SJB (Smart Junction Box) C2280C.
- Measure the resistance between the suspect door ajar switch or body builder connector, harness side and the SJB (Smart Junction Box) as follows:
Suspect Ajar Switch Connector-Pin SJB (Smart Junction Box) Connector-Pin Circuit LH front C2373-1C2280C-14 CPL26 (GN/VT) RH front C2374-1C2280C-2 CPL31 (WH) Side door (hinged) C816-1C2280C-15 CPL39 (YE) Side door (sliding) C398-1C2280C-15 CPL39 (YE) Rear door C4119-1C2280C-3 CPL36 (GN) Body builder C3359-5C2280C-3 CPL36 (GN)
Is the resistance less than 5 ohms?
Yes
GO to A5.
No
REPAIR the circuit in question for an open. TEST the system for normal operation.
A5 CHECK FOR CORRECT SJB (Smart Junction Box) OPERATION
- Disconnect all the SJB (Smart Junction Box) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB (Smart Junction Box) connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.