2005 MY OBD System Operation Summary for Gasoline Engines

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Internal TCM Power SupplyIf the power supply voltage is outside of the specified 8.5 to 16.9 volt range, a fault will be stored (P0562, P0563).Sensor Supply VoltageIf the sensor supply voltage is outside of the specified 6.0 to 10.7 volt range, a fault will be stored (P0641). If thelow side solenoid driver voltage is out of range, a P1710 fault is stored.FORD MOTOR COMPANY REVISION DATE: APRIL 28, 2004 PAGE 122 OF 131
A:(-1(%$> );;!0#The ZF 6HP26 is a 6-speed, step ratio transmission that is controlled by a standalone Transmission ControlModule (TCM), The TCM communicates to the Engine Control Module (ECM), ABS Module, Instrument Clusterand Transfer Case Control Module using the high speed CAN communication link. The TCM incorporates astandalone OBD-II system. The TCM independently processes and stores fault codes, freeze frame, supportsindustry-standard PIDs as well as J1979 Mode 09 CALID and CVN. The TCM does not directly illuminate the MIL,but requests the ECM to do so. The TCM is located inside the transmission assembly. It is not serviceable with theexception of reprogramming.;Transmission Range SensorThe non-contacting, Hall effect Transmission Range (TR) sensor provides four digital inputs to the TCM. Each 4-bitpattern corresponds to the driver-selected gear position (Park, Rev, Neutral, D6, D4, 3, 2, 1). The 4-bit pattern ischecked for invalid combinations (P0705).Speed SensorsThe Turbine Shaft Speed (TSS) sensor and Output Shaft Speed (OSS) sensor are Hall effect sensors.The Turbine Shaft Speed sensor is monitored for circuit faults and rationality (P0715, P0717). If turbine shaft speedexceeds a maximum calibrated speed (7,700 rpm), a fault is stored (P0716). If engine speed and output shaftspeed are high and a gear is engaged, it can be inferred that the vehicle is moving. If there is insufficient outputfrom the TSS sensor a fault is stored (P0716).The Output Shaft Speed sensor is monitored for circuit faults and rationality (P0720, P0722). If output shaft speedexceeds a maximum calibrated speed (7,450 rpm), a fault is stored (P0721). If output shaft speed does notcorrelate with turbine shaft speed and wheel speed while a gear is engaged and the vehicle is moving, a fault isstored (P0721). If the output shaft speed decreases at an erratic/unreasonable rate, a fault is stored (P0723).Transmission Fluid TemperatureThe Transmission Fluid Temperature Sensor is checked for open circuit, short circuit to ground, short circuit topower, and short circuit of the sensor (P0711, P0712, P0713, P0714). The transmission fluid temperature ischecked for an erratic signal (P0714) and is also compared with the internal TCM temperature sensor as arationality check (P0711).;Shift SolenoidsThe Shift Solenoid output circuits are duty-cycled outputs that are checked electrically for open circuit, short circuitto ground and short circuit to power by monitoring the status of a feedback circuit from the output driver (SSA -P0973, P0974; SSB - P0976, P0977; SSC - P0979, P0980; SSD - P0982, P0983; SSE - P0770, P0985, P0986).In addition, during steady states, the current flow through the Variable Force Shift Solenoids is calculated based ona current feedback signal and compared with a target current value (SSA low current - P0972; SSB high current -P0975; SSC low current - P0978; SSD high current - P0981).The shift solenoids are functionally monitored through gear ratio and shift monitoring. The actual gear ratio versusthe expected gear ratio is monitored. If there is a mismatch, a fault is stored (1 st gear - P0731; 2 nd gear - P0732; 3 rdgear - P0733; 4 th gear - P0734; 5 th gear - P0735; 6 th gear - P0729; reverse gear - P0736). Shifts are alsomonitored. If the ratio characteristics do not change properly during a shift (rpm does not go down during an up-FORD MOTOR COMPANY REVISION DATE: APRIL 28, 2004 PAGE 123 OF 131
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Table of ContentsIntroduction - OBD
Page 4 and 5:
!The Catalyst Efficiency Monitor us
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TYPICAL INDEX RATIO CATALYST MONITO
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There are three different misfire m
Page 10 and 11:
0#1The acceleration that a piston u
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J1979 Misfire Mode $06 DataTest ID
Page 14 and 15:
0$Secondary air systems typically u
Page 16 and 17:
201 34536/#/Vehicles that meet enha
Page 18 and 19:
0.040” EVAP Monitor Operation:DTC
Page 20 and 21:
201 3536/#/Some vehicles that meet
Page 22 and 23:
slosh. If the monitor aborts, it wi
Page 24 and 25:
0.020” EVAP Monitor Operation:DTC
Page 26 and 27:
Test ID Comp ID Description for J18
Page 28 and 29:
Ford's EONV implementation for Cali
Page 30 and 31:
1#4;!In this phase, the EONV test i
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0.020” EONV EVAP Monitor Operatio
Page 34 and 35:
201!!#/Additional malfunctions that
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Fuel Tank Pressures Sensor Offset C
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:As fuel system components age or o
Page 40 and 41:
-:-The time between HO2S switches i
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$-A functional test of the rear HO2
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-- 3 amps, (NTK)< 0.400 amps or > 3
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1:$The Delta Pressure Feedback EGR
Page 48 and 49:
If an EGR system malfunction is det
Page 50 and 51:
After the vehicle has warmed up and
Page 52 and 53:
1:$In the 2002.5 MY, Ford introduce
Page 54 and 55:
The ESM may provide the PCM with a
Page 56 and 57:
Next, the differential pressure ind
Page 58 and 59:
I/M Readiness IndicationIf the infe
Page 60 and 61:
The Stepper Motor EGR Monitor consi
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Note: BARO is inferred at engine st
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$. 6The Electric Stepper Motor EGR
Page 66 and 67:
The MAP sensor is also checked for
Page 68 and 69:
When the entry conditions for the f
Page 70 and 71:
1!2Ford plans to comply with the PC
Page 72 and 73: ETC System Failure Mode and Effects
Page 74 and 75: ;#11!%;11!)The purpose of the TPPC
Page 76 and 77: Currently, vehicles use either an E
Page 78 and 79: Fuel Rail Pressure Sensor Check Ope
Page 80 and 81: Loss of Keep Alive Memory (KAM) pow
Page 82 and 83: CKP Ignition System Check Operation
Page 84 and 85: The Idle Air Control (IAC) solenoid
Page 86 and 87: There are several different styles
Page 88 and 89: The PCM continually calculates a ca
Page 90 and 91: Most vehicle applications no longer
Page 92 and 93: Intermediate Shaft Speed Sensor Fun
Page 94 and 95: Primary Pulley Speed Sensor Functio
Page 96 and 97: Secondary Pulley Pressure Sensor Ch
Page 98 and 99: Typical Shift Solenoid mechanical f
Page 100 and 101: Shift Completion Check Operation:DT
Page 102 and 103: Pressure Control Solenoid Check Ope
Page 104 and 105: Forward Clutch/Reverse Clutch Solen
Page 106 and 107: 4$=%$> );4R70E is the replacement f
Page 108 and 109: ! 4%:> );;The Analog Transmission R
Page 110 and 111: $%$> );;The Digital Transmission Ra
Page 112 and 113: Direct One Way ClutchThe Direct One
Page 114 and 115: Direct One Way ClutchThe Direct One
Page 116 and 117: $&&> %$> );;Transmission Range Sens
Page 118 and 119: 4:=%:.)%:> );;The Transmission Rang
Page 120 and 121: CFT 30 Mechatronic Illustration;Tra
Page 124 and 125: shift, rpm does not go up during a
Page 126 and 127: The shift solenoids are monitored f
Page 128 and 129: *> #606Exponentially Weighted Movin
Page 130 and 131: @$!The readiness function is implem
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2005 MY OBD System Operation Summary for Gasoline Engines

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