Mazda MX-6 1998, Workshop Manual

Page: 820 / 1282

AUTOMATIC TRANSAXLE [LA4A-EL]
Note
• For in vehicle testing, use the SST.
Caution
•
Route all cables away from heat sources.
2. Set the two-way switch in the down position.
Install the SSTs (TR/MLP overlay, MLPS harness
adapter) onto the tester. Connect the interlace
cable (cable I.D. “D”) to the transaxle tester and
then to the TR switch connector.
Testing the TR switch
Static testing procedures allow for shop testing of the
transaxle in the vehicle or on the bench. Completion
of these tests prove out the TR switch electronically.
Caution
• For resistance checks, be sure that the
tester select switch is set to the “MLP
SENSOR TEST” position or damage to the
ohmmeter may result.
Note
• Using a digital volt-ohmmeter and the
transaxle tester, perform the pinpoint test “ D”
as indicated on the DTCs which were
displayed. (Refer to 0 5 -0 1 A AUTOMATIC
TRANSAXLE ON-BOARD DIAGNOSIS
[LA4A-EL].)
• Perform repairs as indicated by the pinpoint
test. Always retest and road test the vehicle
after a repair.
3. Turn the test select switch to the “TR/MLP
SENSOR TEST" position.
SENSOR TEST
□
□ <
TR/MLP SENSOR
S ~ > C
TEST POSITION
< 0
□
W 6 U 5 1 7 W A Q
4. Plug the transaxle tester power supply plug into
the cigarette lighter receptacle.
At this time, all LED's should illuminate for a short
period and then turn off. This is the tester internal
circuit check.
TR switch resistance tests
1. Set the ohmmeter to the 1,000 ohm range.
2. Connect the positive lead of the ohmmeter to the
MLP jack.
3. Connect the negative lead of the ohmmeter to the
SIGRTN jack.
4. Move the selector lever into each range position.
5. Record the resistance at each position.
6. Refer to the chart for values.
7. If out of range, preform the pinpoint test “ D”.
(Refer to 0 5 -0 1 A AUTOMATIC TRANSAXLE
ON-BOARD DIAGNOSIS [LA4A-EL].)
Selector lever
position
Resistance (ohms)
Minimum Maximum
P 3,770
4,607
R
1,304 1,593
N
660 806
D 361
442
2 190 232
1
78
95
Park/neutral backup light and optional circuit
voltage tests
Note
• LED will turn “RED” when the circuit is closed
and turn “OFF” when the circuit is open.
1. Set the tester select switch to the “TR/MLP
SENSOR TEST” position.
49 UN01 071
W 6 U 5 1 7 W A P
0 5 -1 7 A -1 5