Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
When the Smart Junction Box (SJB) detects the multifunction switch is in the LH TURN position, the SJB provides voltage to the LH front turn lamp. When the SJB detects the multifunction switch is in the RH TURN position, the SJB provides voltage to the RH front turn lamp. The rear turn lamps are controlled utilizing the rear stoplamp circuitry.
DTC DESCRIPTION CHART
| DTC Description | Fault Trigger Conditions |
|---|---|
|
A continuous DTC that sets when the SJB has temporarily shut down the output driver. The module has temporarily disabled a turn lamp output because an excessive current draw exists (such as a short to ground). The SJB cannot enable the turn lamp output until the cause of the short is corrected, the DTCs have been cleared and a successful self-test is run. |
|
A continuous DTC that sets when the SJB has permanently shut down the output driver. The module has permanently disabled a turn lamp output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the SJB can withstand. The cause of the excessive current draw MUST be corrected before a new SJB is installed. |
|
An on-demand DTC that sets when the SJB detects an open or short to voltage from the RH front turn lamp voltage supply circuit. |
|
A continuous and on-demand DTC that sets when the SJB detects a short to ground from the RH front turn lamp voltage supply circuit. |
|
An on-demand DTC that sets when the SJB detects an open or short to voltage from the LH front turn lamp voltage supply circuit. |
|
A continuous and on-demand DTC that sets when the SJB detects a short to ground from the LH front turn lamp voltage supply circuit. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Bulb holder
- SJB