OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

Turbocharger Actuator Signal Range CheckThe diagnostics for the circuit range check on the pwm signal to the turbocharger VGT actuator are internal to thePWM power-stage. Open load, short-circuit to ground, and short-circuit to battery are detected on the singlecontrol line to the actuator.Turbocharger Control Circuit Open Load/Short to Ground/Short to Power:DTCsMonitor executionMonitor SequenceMonitoring DurationP132A - Turbocharger/Supercharger Boost Control "A" ElectricalContinuousNone2 seconds to register a malfunctionWastegate Vacuum Solenoid Signal Range CheckThe 6.7L chassis cert engine is equipped with a vacuum actuated wastegate. Vacuum is supplied at all times tothe wastegate vacuum regulating valve, which is controlled via PWM signal. When a PWM signal is applied to thevacuum regulating valve, the valve opens and vacuum is applied to the wastegate, and the wastegate opens.There is an intrusive monitor to verify wastegate movement, and in addition there are open load/short circuit toground/battery diagnostics on the vacuum regulating valve.The diagnostics for the circuit range check on the pwm signal to the wastegate vacuum control solenoid areinternal to the PWM power-stage. Open load, short-circuit to ground, and short-circuit to battery are detected onthe single control line to the solenoid.Wastegate Open Load Operation:DTCsMonitor executionMonitor SequenceMonitoring DurationP0243 - Turbocharger/Supercharger Wastegate Solenoid "A"ContinuousNone2 seconds to register a malfunctionWastegate Short Circuit Check Operation:DTCsMonitor executionMonitor SequenceMonitoring DurationP0245 – Turbocharger/Supercharger Wastegate Solenoid "A" LowP0246 – Turbocharger/Supercharger Wastegate Solenoid "A" HighContinuousNone2 seconds to register a malfunction.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 141 OF 157