Mazda MX-6 1998, Workshop Manual

Page: 693 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP INSPECTION
ACTION
C5 SOLENOID FUNCTIONAL TEST
• Emission harness disconnected at transaxle.
• Install transaxle tester at the solenoid body
connecter.
• Using tests outlined under tester instructions
perform the solenoid voltage test.
Note
• LED will turn “GREEN” when solenoid
activated and turn “O F F ’ when deactivated.
• LED will turn “RED” if activated solenoid is
shorted to BAT+.
• LED will remain “OFF" if an activated solenoid
is shorted to ground or no continuity.
• Does the solenoid activate? (LED GREEN)
Yes Go to next step.
No Go to C7.
C6 TRANSAXLE DRIVE TEST
• Perform the drive cycle test as outlined in
transaxle tester manual.
• Does the TCC active when commanded by the
tester?
• Does the engine RPM drop?
Yes Replace PCM.
Erase diagnostic trouble codes (DTCs) and perform Drive
Mode Test.
Rerun OBD test.
If symptom are still present.
ay
0 5 -0 1 A AUTOMATIC TRANSAXLE SYMPTOM
TROUBLESHOOTING [LA4A-EL], torque converter
concern
No
Go to next step.
C7 CHECK RESISTANCE OF SOLENOID
Note
• Refer to the transaxle tester for terminal
location.
• Set bench/drive switch to bench mode.
• Rotate gear select switch to ohms check
position.
• Connect ohmmeter negative lead to TCC jack
and positive lead to VPWR jack on tester.
• Record resistance.
• Is resistance between 12.5— 19.0 ohms?
Yes Go to next step.
No Replace solenoid body component.
C8 CHECK SOLENOID FOR SHORT TO GROUND
• Check for continuity between B A T - (engine
ground) and appropriate jack with and
ohmmeter or other low current tester (less than
200 milliamps).
Yes
Replace solenoid body component.
Solenoid Tester Jack
TCC
TCC
VPWR
No
• Connection should show infinite resistance (no
continuity).
• Is there continuity?
ter 0 5 -0 1 A AUTOMATIC TRANSAXLE SYMPTOM
TROUBLESHOOTING [LA4A-EL], diagnose torque
converter clutch diagnosis
Pinpoint test D
P1705
DTC P0707
P0708
Transaxle range (TR) switch is not in PARK
TR switch out of range
Shorted TR switch circuit or TR switch
TR switch circuit high or open
DESCRIPTION
This pinpoint test is intended to diagnose the following components:
• Transaxle wiring harness, TR switch, TR switch ground circuit
• PCM
• Starter circuits, backup circuits
POSSIBLE
CAUSE
• Engine: Starter, starter relay
• Electrical: Battery, ignition switch, wiring harness
• Transaxle: Internal transaxle components, linkage
0 5 -0 1 A - 1 8