Mazda MX-6 1998, Workshop Manual

Page: 694 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP
INSPECTION ACTION
D1 TR SWITCH
• Check that the TR switch connector is fully
seated, terminals are fully engaged in the
connector and in good condition before
preceeding.
• Verify shift linkage adjustment in D range.
• Key off.
• Apply parking brake.
• Place transaxle in N position.
• Verify that TR switch alignment tool or
equivalent fits in the appropriate slots.
• Is TR switch properly adjusted?
Yes Remove tools.
Go to next step.
No Adjust TR switch as outlined under transaxle component.
After adjustments place selector lever in P position.
Erase DTC and rerun OBD test.
D2
CHECK ELECTRICAL SIGNAL OPERATION
Caution
• Do not attempt to pry on TR switch
connector. This will damage the connector
and could result in a transaxle concern.
Press button and pull up on the transaxle
connector, (vehicle harness side)
• Disconnect TR switch connector.
• Using a mirror, inspect both end of the
connector for damaged or pushed out pins,
corrosion, loose wires and missing or
damaged seals.
• Refer to connector schematic of TR switch.
a-
TR switch connector component
• Connect a volt-ohm meter (VOM) positive test
lead to TR signal circuit and negative test lead
to the signal return (SIG RTN) of TR switch
connector, (vehicle harness side)
• Place VOM on 20 volt scale.
• Key on engine off.
• Is voltage between 4.75 and 5.25 volts?
Yes Go to next step.
No Go to ENGINE SYMPTOM TROUBLESHOOTING No.31.
D3 CHECK CONTINUITY OF TR SWITCH
HARNESS CIRCUITS
• Key off.
Caution
• Do not attempt to pry on TR switch
connector. This will damage the connector
and could result in a transaxle concern.
Press button and pull up on the transaxle
connector, (vehicle harness side)
• Disconnect TR switch connector.
• Inspect for damaged or pushed out pins,
corrosion, loose wires, etc.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires, etc.
service as required.
• Install breakout box, leave PCM disconnected.
• Refer to connector of TR switch.
c r TR Switch Connector Component
• Measure resistance between PCM test pin 91
at the breakout box and the signal return
circuits at the TR switch connector
• Measure resistance between PCM test pin 64
at the breakout box and TR signal circuit at the
TR switch connector
• Is each resistance less than 5.0 ohms?
Yes Go to next step.
No Service open circuit(s).
Remove breakout box.
Reconnect all components.
Erase DTCs.
Rerun OBD tests.
0 5 -0 1 A - 1 9