Mazda MX-6 1998, Workshop Manual

Page: 696 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP
INSPECTION ACTION
D7 CHECK REVERSE/BACK-UP LIGHT CIRCUIT
OF TR SWITCH
• Using the procedures outlined in the tester
manual, check the reverse/back-up light
circuits of TR switch in all gear positions.
• Monitor the status light on the tester for proper
indications.
Reverse/back-up light circuit
Terminal
Selector
lever
position/
range
A good switch will
indicate
92
and
91
P Greater than 100K ohms
R Less than 5 ohms
N Greater than 100K ohms
D Greater than 100K ohms
2 Greater than 100K ohms
1 Greater than 100K ohms
W 6 U 5 0 1 W A 3
• Do the reverse/back-up circuits operate
properly and only in the proper gear positions?
Yes Service as required.
No Replace TR switch and adjust.
Erase DTCs and rerun OBD test.
Pinpoint test DA
KOEO, KOER
DTC P1702 TR switch Intermittent
DESCRIPTION
• DTC P1702 is not received during KOEO and KOER self-test but are output during Continuous
Memory self-test and may be intermittent
POSSIBLE
CAUSE
• Damaged TR switch
• Damaged harness
• Damaged harness connector
• Damaged PCM
STEP
INSPECTION ACTION
DA1 • Key off.
• Breakout box connected.
• Key on.
• Inspect the voltage at the TR switch.
• Tap on sensor to simulate road shock
• Wiggle sensor connector
• Is terminal voltage okay?
Yes Go to next step.
No
DISCONNECT and INSPECT connectors.
If okay, REPLACE sensor.
RESET PCM to completely clear DTC.
tr After Repair Procedure
RERUN OBD Test.
0 5 -0 1 A -21