Mazda MX-6 1998, Workshop Manual

Page: 701 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP
INSPECTION
ACTION
F6 CHECK SENSOR FOR SHORT TO GROUND
• Check for continuity between B A T - (engine
ground) and appropriate jack with an
ohmmeter or other low current tester (less than
200 milliamps).
Solenoid Tester Jack
TSS
+T S S
-T S S
W6U501WA5
• Connection should show infinite resistance (no
continuity).
• Is there continuity?
Yes Replace TSS.
Rerun function test.
No Go to next step.
F7 CHECK TSS MAGNETISM
• Remove TSS from transaxle.
• Place TSS against a metal surface to which a
magnet would stick. The TSS should be
magnetized and stick to the metal surface.
• Does the TSS stick?
Yes
Go to next step.
No
Replace TSS.
Rerun functional test.
F8
CHECK EXCITER WHEEL
• Remove TSS.
• With a remote starter, start and stop until a
tooth of the exciter wheel is visible through the
TSS hole. Continue until all 4 teeth have been
visibly inspected.
• Were all teeth present?
Yes Replace TSS.
Rerun functional test.
No Service or replace as required.
Then rerun function test.
Pinpoint test FA
KOEO, KOER
DTC P1701 Turbine shaft speed (TSS) sensor intermittent
DESCRIPTION
• DTC P1701 is not received during KOEO and KOER self-test but are output during Continuous
Memory self-test and may be intermittent
POSSIBLE
CAUSE
• Damaged TSS sensor
• Damaged harness
• Damaged harness connector
• Damaged PCM
STEP INSPECTION ACTION
FA1 CHECK TSS/ISS OUTPUT WITH NGS TESTER
• Key off.
• NGS tester connected.
• Key on.
• Monitor TSS/ISS PID.
• While observing PID, perform the following:
• Tap on sensor to simulate road shock
• Wiggle sensor connector
• Is there any change in rpm reading?
Yes DISCONNECT and INSPECT connectors.
If okay, REPLACE sensor.
RESET PCM to completely clear DTC.
RERUN OBD Test.
No Go to next step.
FA2 CHECK PCM VEHICLE HARNESS
• Still monitoring PID.
• While observing appropriate PID, perform the
following:
• Hold the vehicle harness close to the sen­
sor connector. Wiggle, shake and bend
small section of wiring harness while work­
ing toward PCM.
• Is there any change in rpm reading?
Yes ISOLATE fault. SERVICE as necessary.
RESET PCM to completely clear DTC.
RERUN OBD Test.
No Service or replace as required.
Then rerun function test.
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