Pinpoint Test K: The Battery Saver Does Not Deactivate After Time-Out

Interior Lighting

Pinpoint Tests

Pinpoint Test K: The Battery Saver Does Not Deactivate After Time-Out

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

Normal Operation

The Smart Junction Box (SJB) provides a battery saver function. The battery saver function provides automatic shutoff of the interior lamps (courtesy lamps and demand lamps) after 10 minutes have elapsed in order to save battery power.

A timer in the SJB is started when the ignition is turned OFF, and all the doors and the luggage compartment lid are closed. When the time-out period for the lamps has elapsed, the voltage is automatically shut off to the lamps by the SJB.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- SJB



PINPOINT TEST K: THE BATTERY SAVER DOES NOT DEACTIVATE AFTER TIME-OUT

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K1 CHECK THE SJB IGNITION SWITCH PIDs


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Monitor the SJB ignition switch PIDs (IGN_A_ECU, IGN_O_ECU, IGN_R_ECU and IGN_S_ECU) while cycling the ignition switch through all positions.
- Do the ignition switch PIDs agree with the ignition switch positions?

Yes
GO to K2.

No
REFER to Steering Column.

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K2 CHECK THE DEMAND LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE


- Ignition OFF.
- Disconnect: SJB C2280d .
- Ignition ON.
- Operate the demand lamps.
- Do the demand lamps illuminate?

Yes
REPAIR the circuit. TEST the system for normal operation.

No
GO to K3.

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K3 CHECK FOR CORRECT SJB OPERATION


- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB 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. REFER to Body Control Systems. 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.

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