Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [LA4A-EL]
Pinpoint test BC
KOEO, KOER
DTC P0713
Transaxle fluid temperature (TFT) -4 0 ‘ C {-4 0 °F} indicates TFT sensor circuit open
DESCRIPTION
Self-test diagnostic trouble code (DTC) P0713 indicates a TFT sensor circuit input above the maximum
acceptable voltage.
POSSIBLE
CAUSE
• Fluid level is not as specified
• Damaged TFT sensor
• Short to power circuit in TFT signal harness circuit
• Open in TFT signal or TFT sensor ground harness circuit
• Damaged PCM
STEP
INSPECTION ACTION
BC1 KEY ON ENGINE OFF (KOEO) AND KEY ON
ENGINE RUNNING (KOER) DTC P0713:
ATTEMPT TO INDUCE OPPOSITE CONDITION
• Key off.
• Disconnect transaxle bulkhead connector.
• Inspect for damaged or pushed out pins,
corrosion, loose wires, etc. Service as
necessary.
• Insert a jum per from TFT signal circuit to TFT
sensor ground circuit at the transaxle vehicle
harness connector.
• Connect NGS tester to DLC.
• Activate KOEO and KOER self-tests.
• Is DTC P0712 present?
Note
• Disregard any other DTCs generated at this
time. If not DTCs are generated (module not
responding), then immediately go to step BC3.
Yes The fault that produced DTC P0713 is not within the TFT
harness circuits or the PCM.
Remove jumper wire.
Go to BC4.
No The opposite condition could not be induced.
Remove jumper wire.
Go to next step.
BC2
CHECK CONTINUITY OF TFT SIGNAL AND
TFT SENSOR GROUND CIRCUITS
• Key off.
• Transaxle connector disconnected.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires, etc.
Service as necessary.
• Install breakout box, leave PCM disconnected.
• Measure resistance between TFT signal circuit
at the transaxle vehicle harness connector and
test pin 37 at the breakout box.
• Measure resistance between TFT sensor
ground circuit at the transaxle vehicle harness
connector and test pin 91 at the breakout box.
• Is each resistance less than 5.0 ohms?
Yes Go to next step.
No Service open in TFT signal or TFT sensor ground harness
circuit.
Remove breakout box.
Reconnect all components.
Rerun OBD test.
BC3
CHECK FOR TFT SIGNAL CIRCUIT SHORT TO
POWER
• Key off.
• Transaxle connector disconnected.
• Breakout box installed, PCM disconnected.
• Key on, engine off.
• Measure voltage between test pin 37 and test
pin 77 or 103 at the breakout box.
• Key off.
• Was the voltage greater than 2.0 volts?
Yes Service short to power in TFT signal harness circuit.
Remove breakout box.
Reconnect all components.
Rerun OBD test.
No
Replace damaged PCM.
Remove breakout box.
Reconnect all components.
Rerun OBD test.
0 5 -0 1 A - 1 2