SECONDARY MONITORING PARAMETERS AND CONDITIONS

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Pearl Hubbard
5 years ago
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1 S S MIL Vehicle Speed Sensor - Low input Vehicle Speed Sensor - Intermittent P0502 nalog 0 RPM to 6000 RPM a low vehicle speed vehicle has a large engine speed in a drive gear range. P0503 nalog 0 RPM to 6000 RPM an unrealistic large drop in vehicle speed. Output Speed < In P/N: Output Speed drop > 8192 RPM Not P/N: Output Speed drop >1300 RPM - Gear Range is not Park/Neutral - No TPS high or low DT's set - No Map Sensor DT's set - Vacuum 25 to 60 KP - Throttle Position 20 to 50% - Engine Speed 3200 to 4775 RPM - Time since last Gear Range hange > 6 Seconds - Engine Speed >450 rpm - No Output Speed rise > 600 rpm within 2 - Time since 4WDL State hange > 6 3 In park or neutral 409 Not in park or neutral 3 Trans Fluid Temp Sensor ircuit - Test P0711 nalog.24v to 5.0V The DT detects an unrealistically large change in transmission temperature or a value which remains constant for a period of time in which a measurable amount of change is expected. 1) Failure 1 is true for 409 2) Failure 2 happens 14 times in 7 sec. - System Voltage: 10 and 18 volts - Raw TTS counts: 10 to No DT Trans Temp at startup: -40 to 21 - Engine Running 409 sec. - Vehicle Speed 5 mph for 409 sec. cumulative this ignition cycle. - Torque onverter Slip 120 rpm for 409 sec. cumulative this ignition cycle. - oolant Temp 70 and has changed by 50 since startup. 1) 409 2) 7 continuous 1) Trans Temp has not changed 2.25 (absolute value) since startup 2) Trans Temp changes 20 (absolute value) in 200 msec. Trans Fluid Temp Sensor ircuit - Low input (high temp) P0712 nalog.24v to 5.0V The DT detects short to ground in the TTS signal circuit or the TTS sensor Raw TTS count < 10 - Ignition on 10 Trans Fluid Temp. Sensor ircuit - High Input (Low temp) P0713 nalog.24v to 5.0V The DT detects high in the TTS signal circuit or the TTS sensor Raw TTS counts > Ignition on 400 rake Switch ircuit Low Input rake ON P0719 Digital.0V to 12.0 V an open brake switch during accelerations. ccel counts >= 8 and brake is ON for 900 without going off for 2. This ode Has not passed this ingnition cycle. - rake Switch Off is not passed - Increment ccel counter when the rake Switch is On and the following conditions are met: 8 test failures on the current ignition cycle. 1. Vehicle Speed <5 MPH, then, 2. Vehicle Speed: 5 to 20 MPH for 4, then, 3. Vehicle Speed > 20 MPH for 6. Page 1 of 6

2 S S MIL rake Switch ircuit High Input rake OFF P0724 Digital.0 V to 12.0 V a closed brake switch during de accelerations Decel counts >= 8 and brake has not been ON for > 2 This ode Has not passed this ingnition cycle - Increment Decel counter when the rake Switch is OFF and the following conditions occur: 8 test failures on the current ignition cycle T Enable Solenoid Electrical P0740 nalog 0V to 12V T circuit or the T solenoid Fail ounter >43 ounts out of 50 Total ounts 1. Vehicle Speed > 20 MPH for 6, then, 2. Vehicle Speed: 5 to 20 MPH for 4, then, 3. Vehicle Speed < 5 MPH and not in fuel cutoff T System Stuck OFF P0741 Software high torque converter slip T is commanded on. T slip > 130 rpm for 13 Fail ounter: 2 and not in fuel cutoff - Gear Range is D2 or D3 or D4 - No PS DT s set - No TPS High or Low DT's - No T solenoid electrical DT s - No T P0742 T Stuck ON DT set No range change in last 6 sec - TPS: 20% to 99% - Trans temp.: 20 to Gear ratio: 0.89 to T commanded on for 5 sec - T duty cycle >= 40% T must be commanded off for at least 0.1 between on cycles T System Stuck ON P0742 Software low torque converter slip T is commanded off. T Slip: -20 to +20 RPM Fail ounter >= 2 - Engine Speed > 450 rpm for 6 and not in fuel cutoff - No Range change within 5 sec. - No TP high or low sensor DT's - No T Enable Sol. DT's - No T ontrol Sol. DT's -No PS DT set -No Engine Torque Defualt - Eng Torque: 50 to 400 ft-lbs - Vacuum: 0 to 105 kpa - ommanded Gear is not 1st - Trans temp.: 20 to Throttle Position: 17% to 45% - T is commanded off - Engine Speed: 1000 to 3000 rpm - Speed Ratio: 0.64 to Vehicle Speed: 15 to 50 mph 5 Page 2 of 6

3 S S MIL P0751 nalog Fail ounter >= 2 1 and 2 General -Engine Speed > 450 rpm for 5 and not in fuel cutoff -Gear range is D4 -No TP high or low DT's -No VSS low or intermittent DT's -No Solenoid electrical DT's -No DT 742 -No PS DT set -Trans Temp.: 20 to 130 Fail ase 1-1st gear commanded >= 2.0 Fail ase one time - Modeled speed ratio >= 0.35 Gear ratio 1.2 to 1.8 Fail ase 2 4th gear commanded >= 1.0 second Modeled speed ratio >= 0.85 Gear ratio 0.95 to 1.15 Fail ase one time P0752 nalog Fail ounter >= 2 1 and 2 General -Engine Speed > 450 rpm for 5 and not in fuel cutoff -Gear range is D4 -No TP high or low DT's -No VSS low or intermittent DT's -No Solenoid electrical DT's -No DT 742 -No PS DT set -Trans Temp.: 20 to 130 Fail ase 1-2nd gear commanded >= 1.0 second Engine torque: 25 to 400 ft lbs - Modeled speed ratio >= 0.5 Gear ratio 3.0 to 3.3 Fail ase 2-3rd gear commanded >= 1.0 second - Modeled speed ratio >= 0.5 Gear ratio 0.65 to 0.9 Fail ase Fail ase Electrical P0753 nalog 0V to 12V SS circuit or the SS solenoid Fail ounter >43 ounts out of 50 Total ounts and not in fuel cutoff Page 3 of 6

4 S S MIL P0756 Software Fail ounter >= 1 1 and 2 and not in fuel cutoff - No TPS DT's - No solenoid electrical DT s - No T Stuck On DT. - Trans Temp: 20 to 130 Fail ase 1-1st gear commanded >= 2.0 sec. - Transmission Output >= 200 rpm - Engine Torque: 50 to 400 ft lbs Fail ase second - T Slip: to 200 rpm Gear ratio 0 to 1.4 Fail ase 2-2nd gear command >= 1.0 sec - Engine Torque: 50 to 400 ft lbs Fail ase Modeled Speed Ratio >= 0.5 Gear ratio P0757 Software Fail ounter >= 1 1 and 2 and not in fuel cutoff - No TPS DT's - No solenoid electrical DT s - No T Stuck On DT. - Trans Temp: 20 to 130 Fail ase 1-3rd gear commanded >= 1.0 sec. - Engine Torque: 50 to 400 ft lbs - modeled Speed Ratio >= Gear ratio 1.6 to 1.8 Fail ase 2-4th gear commanded >= 1.0 sec. - Engine Torque: 0 to 400 ft lbs - modeled Speed Ratio >= Gear ratio 1.8 to 3.3 Fail ase Fail ase Electrical 3-2 Downshift Solenoid Electrical P0758 nalog 0V to 12V SS circuit or the SS solenoid P0785 nalog 0V to 12V D32 solenoid circuit or the D32 solenoid Fail ounter >43 ounts out of 50 Total ounts Fail ounter >43 ounts out of 50 Total ounts - System Voltage: 10 to 18volts and not in fuel cutoff and not in fuel cutoff Page 4 of 6

5 S S MIL PS ircuit Malfunction P1810 Digital 0V to 12V an invalid state of the PS sensor or the PS circuit by deciphering the PS inputs. Fail ase 1 Illegal Trans Pressure Switch State (111) or (101) Fail ase 2 Gear range is D2, D4, or Reverse during engine startup. Fail ase 1 and not in fuel cutoff Fail ase 2 - Vehicle Speed <2 mph 1. Engine Speed < 80 rpm for > 0.1, then, 2. Engine Speed: 80 to 550 rpm for > 0.07, then, 3. Engine Speed > 550 rpm Fail ase 1 60 Fail ase 2 5 Seconds Fail ase 3 10 Fail ase 3 Gear range is Park or Neutral when operating in D4. Fail ase 3 and not in fuel cutoff - System Voltage: 8 to 18 volts - 4th gear commanded - Engine Torque: 40 to 400 ft-lbs - Vacuum: 0 to 105 kpa - T Locked On - Speed Ratio: 0.60 to 0.75` - TPS: 10% to 50% T PWM Solenoid Electrical P1860/ P2761 nalog 0V to 12V T PWM circuit or the T PWM sensor Fail ounter >43 ounts out of 50 Total ounts and not in fuel cutoff - ommanded Gear is 1st - T Duty ycle < 10% or > 90% Page 5 of 6

6 S S MIL Transmission omponent Slipping P894 Software excessive T slip torque converter clutch should be engaged. If T slip is: 130 to 800 rpm for 7, then increment the Trans Slip ounter by one. When the counter reaches 3, set the code OR When fail case 2 is true. and not in fuel cutoff - Gear is not 1st - No PS DT s set - No TPS High or Low DT's - No solenoid electrical DT s - Diagnostic counters are all zero - TPS: 20% to 99% - Trans temp.: 20 to No Engine Torque Default - Engine Torque: 50 to 400 ft-lbs - Vac: 0 to 105 kpa - Speed ratio: 0.69 to Engine Speed: 1500 to 3000 rpm - Vehicle Speed: 30 to 82 mph Fail ase 1 - T commanded on for > 5 sec - T commanded to 40% for > 5 Fail ase 2 - Run fail case 2 immediately after fail case 1 increments the trans slip counter to either 1or 2. Discontinue fail case 2 if the T is commanded OFF at any time. - TPS: 20% to 99% riteria If : 130 rpm < T slip < 800 rpm for 7, then: Go to max pressure freeze adapts go to criteria riteria If : 130 rpm < T slip < 800 rpm for 7, then: ommand T OFF for 1.5 go to criteria riteria If : 130 rpm < T slip < 800 rpm for 7, then: Set code p1870 Four Wheel Drive Low ircuit P1875/ P2771 NOT PPLI L E Digital 0V to 12V Four Wheel Drive low ircuit Stuck On Engine Spd Divided by Transfer ase Output Spd Ratio:.8 to 1.2 Stuck Off Engine Spd Divided by Transfer ase Output Spd Ratio: 2.5 to 2.9 and not at fuel cut off - No TPS DT's set - No PS DT's set - ounters are zero - No VSS Low DT's set - No T Enable Sol. DT's set - No T ontrol Sol. DT's set - No SS Sol. DT's set - No SS Sol. DT's set - No T DT's set - Eng Torque: 40 to 400 ftlbs - V: 0 to 105 kpa - Trans Temp: 20 to Vehicle Speed > 7 MPH - TPS: 17% to 50% 5 Seconds 1 Occurrence 10 Seconds 1 Occurrence Stuck ON - 4wd Low switch in 4wd Low - Transfer case not in 4wd Low - T Slip: to -50 rpm Stuck OFF - 4wd Low switch not in 4wd Low - Transfer case is in 4wd Low - T ON - T Slip: 100 to 3000 rpm Page 6 of 6

TRANSMISSION DIAGNOSTIC PARAMETERS

TRANSMISSION DIAGNOSTIC PARAMETERS Transmission Fluid Overtemperature Vehicle Speed Sensor - Low input Vehicle Speed Sensor - Intermittent Trans Fluid Temp Sensor ircuit - Performance Test P0218 This DT detects a high transmission temperature