F 350 2WD Super Duty V10-6.8L (2009)
Refer to Wiring Diagram Set 95, Trailer/Camper Adapter for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By
Number
Normal Operation
The braking energy that is provided to the trailer from the Trailer Brake Control (TBC) module is varied with a Pulse Width Modulated (PWM) signal
that switches between 0 volt and battery voltage, the higher the duty cycle the more braking power available. For normal operation, the fused battery
supply to the TBC module must be between 9 and 16 volts. If the voltage falls below or goes above these parameters, the appropriate DTC will be set.
The TBC module receives fused battery voltage from Battery Junction Box (BJB) fuse 5 (30A) along circuit SBB05 (GY/RD) and fused ignition voltage
from Smart Junction Box (SJB) fuse 33 (10A) along circuit CBP33 (WH/BN). The ground path for the TBC module is along circuit GD115 (BK/GY).
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B1317 Battery Voltage High - If the battery voltage is greater than 16 volts for 200 ms or longer, the TBC module shuts off trailer brake output
and then shuts down.
-
B1318 Battery Voltage Low - If the battery voltage is less than 9 volts for 200 ms or longer, the TBC module shuts off trailer brake output and
then shuts down.
This pinpoint test is intended to diagnose the following:
-
Fuse(s)
-
Wiring, terminals or connectors
-
Vehicle battery
-
Vehicle charging system
-
TBC module
PINPOINT TEST E: DTC B1317 or B1318
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
NOTE: DTCs B1317, B1318 or B1676 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has
been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has
been left unattended with the accessories on.
NOTE: Carry out a thorough inspection and verification before proceeding with the pinpoint test. Refer to Inspection and Verification. See: Initial
Inspection and Diagnostic Overview/Inspection and Verification
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E1 RETRIEVE ALL CMDTCs IN ALL MODULES
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Ignition ON.
-
Enter the following diagnostic mode on the scan tool: Self Test - All CMDTCs.
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Is B1317, B1318 or B1676 present in one or more modules AND P0563, P0620, P0625, P0626 or P065B present in the PCM?
Yes
REFER to Charging System for diagnosis of the battery and charging system.
No
GO to E2.
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E2 CHECK BATTERY CONDITION
-
Ignition OFF.
-
Refer to Battery and carry out the Battery - Condition Test. See: Starting and Charging/Battery/Testing and Inspection/Pinpoint Tests
-
Does the battery pass the condition test?
Yes
If the battery passed the condition test but required a recharge, REFER to Charging System to diagnose the charging system. CLEAR all Continuous
Memory Diagnostic Trouble Codes (CMDTCs). TEST the system for normal operation.
If the battery passed the condition test and did not require a recharge, GO to E3.
No
