Contents Wiring diagrams Section: Automatic Transaxle System: Diagnosis All sections

COMPONENT INSPECTION Kia Optima II

Automatic Transaxle System: Diagnosis 3 illustrations ~401 words

COMPONENT INSPECTION

Refer to DTC P0707 .

ItemDetecting ConditionPossible cause
DTC StrategyCheck rationalitySensor signal circuit is short to ground Faulty sensor Faulty PCM
Enable Conditions 1)Intake air temperature > or = -25°C (-13°F) Engine state = RUN No error with relations other sensors Engine be cooled sufficiently
Enable Conditions 2)Engine state = RUN Average start up temperature of TM stuck diagnostic < or = 55°C (131°F)
Threshold Value 1)ATF Temp - Coolant Temp > or = 20°C (68°F)
Threshold Value 2)ATF Temp - TM start up Temp < or = 0.5°C (32.9°F)
Diagnostic Time 1)More than 1 second
Diagnostic Time 2)More than 900 seconds
Fail SafeLearning control and Intelligent shift are inhibited Fluid temperature is regarded as 80°C (176°F)

DTC CHART

  1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
  2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
  3. Has a problem been found? YES : --> Repair as necessary and go to " «VERIFICATION OF VEHICLE REPAIR»(ref-266022-S38935768742007092700000) " procedure. no : --> Go to " «COMPONENT INSPECTION»(ref-266022-S08842658292007092700000) " procedure.

Scheme 28

Scheme 28: COMPONENT INSPECTION

Scheme 29

Scheme 29
  1. CHECK "TRANSAXLE FLUID TEMPERATURE SENSOR" Ignition "OFF". Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector. Measure the resistance between terminals "1" and "2" of the "TRANSAXLE FLUID TEMPERATURE SENSOR". Specification: Refer to «RESISTANCE SPECIFICATION CHART»(ref-266022-S27514113292007092700000) [REFERENCE DATA] RESISTANCE SPECIFICATION CHART TEMP.[°C (°F)] Resistance (kohms) TEMP.[°C (°F)] Resistance (kohms) -40 (-40°F) 139.5 80 (176°F) 1.08 -20 (-4°F) 47.7 100 (212°F) 0.63 0 (32°F) 18.6 120 (248°F) 0.38 20 (68°F) 8.1 140 (284°F) 0.25 40 (104°F) 3.8 160 (320°F) 0.16 60 (140°F) 1.98 Is resistance within specifications? YES : --> Go to 2 "CHECK PCM/TCM" as below. no : --> Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to " «VERIFICATION OF VEHICLE REPAIR»(ref-266022-S38935768742007092700000) " procedure.
  2. CHECK PCM Ignition "ON" & Engine "OFF". Connect "TRANSAXLE FLUID TEMPERATURE SENSOR" connector. Install scan tool and select a SIMU-SCAN. Simulate voltage (0 -->5V) to "TRANSAXLE FLUID TEMPERATURE SENSOR" signal circuit. Is FLUID TEMP. SENSOR signal value changed according to simulation voltage? YES : --> Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(ref-266022-S38935768742007092700000) " procedure. no : --> Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to " «VERIFICATION OF VEHICLE REPAIR»(ref-266022-S38935768742007092700000) " procedure.
ItemDetecting ConditionPossible cause
DTC StrategyCheck for Voltage rangeSensor signal circuit is short to ground Faulty sensor Faulty PCM
Enable ConditionsEngine state = RUN
Threshold ValueVoltage < 0.07V
Diagnostic TimeMore than 1sec
Fail SafeLearning control and Intelligent shift are inhibited Fluid temperature is regarded as 80°C (176°F)

DTC CHART

Refer to DTC P0711 .

Scheme 30

Scheme 30: SIGNAL CIRCUIT INSPECTION
  1. Ignition "ON" & Engine "OFF".
  2. Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.
  3. Measure the voltage between terminal "1" of the "TRANSAXLE FLUID TEMPERATURE SENSOR" harness connector and chassis ground. Specification: Approx. 5 V
  4. Is voltage within specifications ? YES : --> Go to " «COMPONENT INSPECTION»(ref-266022-S13552665742007092700000) " procedure. no : --> Check for short to ground in harness. Repair as necessary and Go to " «VERIFICATION OF VEHICLE REPAIR»(ref-266022-S18049965902007092700000) " procedure.

Refer to DTC P0711 .

ItemDetecting ConditionPossible cause
DTC StrategyCheck for Voltage rangeSensor signal circuit is short to ground Faulty sensor Faulty PCM
Enable ConditionsIntake air temperature > or = -23.5°C (-10.3°F) Engine state = RUN
Threshold ValueVoltage > or =4.9V
Diagnostic TimeMore than 1sec
Fail SafeLearning control and Intelligent shift are inhibited Fluid temperature is regarded as 80°C (176°F)

DTC CHART

Refer to DTC P0711 .