OBD Operation Summary for 6.7L Diesel - MotorCraftService.com
OBD Operation Summary for 6.7L Diesel - MotorCraftService.com OBD Operation Summary for 6.7L Diesel - MotorCraftService.com
Lack of Communication Codes:CAN Communications ErrorThe TCM receives information from the ECM via the high speed CAN network. If the CAN link or network fails, theTCM no longer has torque or engine speed information available. The TCM will store a U0073 fault code and willilluminate the MIL immediately (missing engine speed) if the CAN Bus is off. The TCM will store a U0100 fault codeand will illuminate the MIL immediately (missing engine speed) if it stops receiving CAN messages from the ECM.ECU CAN Communication MalfunctionsDTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationU0073 - Control Module Communication Bus "A" OffU0074 - Control Module Communication Bus "B" OffU0101 - Lost Communication with TCMU0102 - Lost Communication with Transfer Case Control ModuleU0121 - Lost Communication With Anti-Lock Brake System (ABS) Control ModuleU0140 - Lost Communication With Body Control ModuleU0151 - Lost Communication With Restraints Control ModuleU0212 - Lost Communication With Steering Column Control ModulecontinuousNonenot applicablecontinuousTypical Malfunction ThresholdsU0073 CAN Chip Driver detect CAN line short or open > 10 msU0074 CAN Chip Driver detect CAN line short or open > 10 msU0101 TCM master message not received for 1 secU0102 TCCM master message not received for 5 secU0121 ABS master message not received for 5 secU0140 BCM master message not received for 10 secU0151 RCM master message not received for 10 secU0212 SCCM master message not received for 5 secFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 134 OF 157
Vehicle speed is received by the ECU over CAN. When engine speed and torque are above calibrated thresholds(which infer vehicle motion) and vehicle speed over CAN is less than a threshold, the fault is set.VS Communication Plausibility MalfunctionsDTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP1934 Vehicle Speed SignalcontinuousNonenot applicablecontinuousTypical Malfunction ThresholdsP1934 VS < 15 kph for > 10 secondsFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 135 OF 157
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Vehicle speed is received by the ECU over CAN. When engine speed and torque are above calibrated thresholds(which infer vehicle motion) and vehicle speed over CAN is less than a threshold, the fault is set.VS Communication Plausibility MalfunctionsDTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP1934 Vehicle Speed SignalcontinuousNonenot applicablecontinuousTypical Malfunction ThresholdsP1934 VS < 15 kph <strong>for</strong> > 10 secondsFORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 135 OF 157
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