Mazda MX-6 1998, Workshop Manual

Page: 688 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP INSPECTION
ACTION
BC4
KOEO & KOER DTC P0713 — ATTEMPT TO
INDUCE OPPOSITE CONDITION
• Key off.
• Disconnect solenoid body connector.
• Using a mirror, inspect both ends of the
connector for damaged or pushed out pins,
corrosion, loose wires, and missing or
damaged seals.
• Insert a jum per from TFT signal circuit to TFT
sensor ground circuit at solenoid body
connector.
• Perform KOEO and KOER tests.
Note
• Disregard any other DTCs generated at this
time. If no DTCs are generated (module not
responding), then immediately go to BC3.
•
Is DTC P0712 present?
Yes
The fault that produced DTC P0713 is not within the TFT
harness circuits or the PCM.
Remove the jumper wire.
Go to pinpoint test BA.
No The opposite condition could not be induced.
Remove jum per wire.
Go to next step.
BC5
CHECK CONTINUITY OF TFT SIGNAL AND
TFT SENSOR GROUND CIRCUITS
•
Key off.
•
Solenoid body connector disconnected.
•
Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires, etc.
•
Install breakout box, leave PCM disconnected.
•
Measure resistance between test pin 37 at the
breakout box and TFT sensor ground circuit at
the solenoid body connector.
•
Measure resistance between test pin 91 at the
breakout box and TFT sensor ground circuit at
the solenoid body connector.
• Is each resistance less than 5 ohms?
Yes Service open in TFT signal or TFT sensor ground harness
circuit.
Remove breakout box.
Reconnect all components.
Clear DTCs and rerun self tests.
No
Reconnect all components.
Unable to duplicate or identify fault at this time.
Intermittent poor connection or component malfunction
(Repair or repalace as necessary).
P in p o in t te s t B D
CONTINUOUS
DTC P0713
Transaxle fluid temperature (TFT) -4 0 °C {-4 0 ”F} indicates TFT sensor circuit open
DESCRIPTION
Diagnostic trouble code (DTC) P0713 indicates a TFT sensor circuit input above the maximum
acceptable voltage.
POSSIBLE
CAUSE
• Fluid level is not as specification
• Damaged TFT sensor
• Short to power circuit in TFT signal harness circuit
• Damaged PCM
STEP INSPECTION
ACTION
BD1 CONTINUOUS MEMORY DTC P0713: VERIFY
TFT SIGNAL VOLTAGE
• Key on, engine off.
• Access TFT PID with a NGS tester.
• Is TFT PID voltage greater than 4.8 volts?
Yes
The TFT signal voltage is greater than the acceptable
maximum, but is not intermittent.
Go to step BC1
No The fault that produced continuous memory DTC P0713 is
intermittent.
Go to next step.
BD2
WIGGLE TEST TFT SENSOR HARNESS
CIRCUITS
• Key on, engine off.
• Access TFT PID with a NGS tester.
• Observe TFT PID for an indication of a fault
while performing the following:
• Shake, wiggle and bend TFT signal and
TFT sensor ground circuits between
transaxle and PCM. A fault is indicated by a
sudden change in TFT PID voltage.
• Is a fault indicated?
Yes
Isolate fault and service as necessary.
Reconnect all components.
Complete PCM.
Reset to clear DTCs.
Rerun OBD test.
No Reconnect all components.
Unable to duplicate or identify fault at this time.
Intermittent poor connection or component malfunction
(Repair or replace as necessary).
0 5 -0 1 A - 1 3