Pinpoint Test E: One Or More Control Switch Illumination is Inoperative

Instrument Cluster and Panel Illumination

Pinpoint Test E: One Or More Control Switch Illumination is Inoperative

Normal Operation

When the delayed accessory relay is energized, voltage is provided to the non-dimmable switches.

Based on input received from the instrument panel dimmer switch, the Smart Junction Box (SJB) sends a Pulse Width Modulated (PWM) voltage to the hardwired dimmable switches.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Illuminated switch

PINPOINT TEST E : ONE OR MORE CONTROL SWITCH ILLUMINATION IS INOPERATIVE

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

E1 CHECK THE WINDOW CONTROL SWITCH ILLUMINATION

- Ignition ON.

- Observe the illumination on all the window control switches.

Are all the window control switches illuminated?

Yes
GO to E2.

No
GO to E3.

E2 CHECK THE VOLTAGE TO THE SINGLE ILLUMINATION SOURCE

NOTE: If the headlamp switch illumination is the inoperative source, unplug the headlamp switch connector to measure the illumination circuit voltage. Unplugging the connector causes the SJB (Smart Junction Box) to turn the exterior lights on by default for 10 minutes, so it is unnecessary to turn on the headlamp switch.

- Ignition OFF.

- Disconnect: Inoperative Illumination Source.

- Ignition ON.

- Place the headlamp switch in the PARKING LAMPS ON position.

- Rotate the instrument panel dimmer switch to the full illumination position.

- Measure the voltage between the inoperative illuminated component, harness side and ground as follows:

Component Connector-Pin Circuit Floor shifter C3245-4 VLN37 (BU/WH) Headlamp switch C205-2 VLN37 (BU/WH) Luggage compartment lid release switch C2269-3 VLN37 (BU/WH) Rear sun shade switch C3196-3 VLN37 (BU/WH) Start/stop switch C2195-5 VLN37 (BU/WH) Instrument panel dimmer switch C2065-1 VLN37 (BU/WH) LR heated seat switch C320-5 CBP41 (BU) RR heated seat switch C321-5 CBP41 (BU)







Component Connector-Pin Circuit Roof opening panel control switch C912-2 CBP41 (BU) LH door lock control switch C541-3 CBB38 (GY/BU) RH door lock control switch C605-3 CBP41 (BU) Memory seat switch C503-3 CBB38 (GY/BU)






Is the voltage greater than 10 volts?

Yes
For the headlamp switch, GO to E3.

For any other component/switch, INSTALL a new component/switch in question. TEST the system for normal operation.

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

E3 CHECK THE GROUND CIRCUIT TO THE SINGLE ILLUMINATION SOURCE FOR AN OPEN

- Ignition OFF.

- Disconnect: Suspect Window Control Switch (if not illuminated).

- Ignition ON.

- Measure the voltage between the inoperative illuminated component, harness side and ground as follows:

Component Connector-Pin/ Circuit Connector-Pin/ Circuit Headlamp switch C205-2 VLN37 (BU/WH) C205-1 GD116 (BK/VT) LH front window control switch C504-3 CBB38 (GY/BU) C504-15 GD133 (BK) RH front window control switch C604-1 CPW14 (VT/WH) C604-5 GD145 (BK/BU) LH rear window control switch C701-1 CPW14 (VT/WH) C701-5 GD133 (BK) RH rear window control switch C801-1 CPW14 (VT/WH) C801-5 GD145 (BK/BU)






Is the voltage greater than 10 volts?

Yes
INSTALL a new component in question. TEST the system for normal operation.

No
REPAIR the ground circuit in question for a short to ground. TEST the system for normal operation.