Focus L4-2.0L (2009)
Pinpoint Test B: DTC B1317
Smart Junction Box (SJB)
Pinpoint Tests
Pinpoint Test B: DTC B1317
Refer to Wiring Diagrams Set 13, Power Distribution/SJB for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
The Smart Junction Box (SJB) monitors the voltage from the battery to determine if it goes above or below specific thresholds and sets DTC B1317 in
continuous memory and on-demand if the SJB detects high battery voltage above 15.5 volts on circuit SBB39 (WH/RD).
-
DTC B1317 (Battery Voltage High) - a continuous memory or an on-demand DTC that sets when the SJB detects battery voltage above 15.5 volts
on circuit SBB39 (WH/RD).
This pinpoint test is intended to diagnose the following:
-
Charging system concern
-
SJB
PINPOINT TEST B: DTC B1317
NOTE: DTC B1317 may be stored in the module memory due to previous battery charging or vehicle jump starting events.
-------------------------------------------------
B1 CHECK FOR DTC B1317, B1676 OR P0563 SET IN OTHER MODULES
-
Ignition ON.
-
Enter the following diagnostic mode on the scan tool: (All CMDTCs) Self-Test.
-
Retrieve the continuous memory DTCs from all modules.
-
Is DTC B1317, B1676 or P0563 (PCM) set in more than one module?
Yes
REFER to Charging System to diagnose an overcharging condition.
No
GO to B2.
-------------------------------------------------
B2 CHECK THE BATTERY VOLTAGE
-
Turn off all interior/exterior lights and accessories.
-
Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.
-
Does the battery voltage rise to 15.5 volts or higher?
Yes
REFER to Charging System to diagnose an overcharging condition.
No
GO to B3.
-------------------------------------------------
B3 RECHECK FOR DTC B1317
-
Turn the engine off.
-
Ignition ON.
-
Enter the following diagnostic mode on the scan tool: SJB Self-Test.