Mazda MX-6 1998, Workshop Manual

Page: 535 / 1282

CONTROL SYSTEM [FS]
MAIN RELAY INSPECTION [FS]
Inspection of Output Voltage
1. If the SST (104 Pin Breakout Box) are used,
check in the following order.
(1) Remove the PCM. (Refer to 01-40A
POWERTRAIN CONTROL MODULE (PCM)
REMOVAL/INSTALLATION [FS].)
(2) Connect the SST (104 Pin Breakout Box) to
the PCM as shown.
W6U140W22
(2) Turn the ignition switch to ON.
(3) Select the “PID/DATA MONITOR AND
RECORD” function on the NGS tester display
and press TRIGGER.
(4) Select “VPWR” on the NGS tester display and
press START. The NGS tester measures and
shows the voltage.
Specification
W6U140WBD
(3) Tighten the connector bolt.
Tightening torque
7.9— 10.7 N m
{80— 100 kgf cm, 69.5—95.4 in lb f}
(4) Turn the ignition switch to ON.
(5) Measure the voltage at PCM terminal 71 and
97.
Specification__________________________________
C o n d itio n “ VPW R” v o lta g e (V)
Ignition switch OFF Below 1.0
Ignition switch ON B+
(5) If not as specified, check the related harness
and main relay continuity.
Inspection of Continuity
1. Remove the main relay.
2. Apply battery positive voltage and check continuity
between terminals of the relay by using an
ohmmeter.
O O : Continuity
Step
Term inal
A (86) F (85)
B (87) E (30)
1
O------- ------ O
2 B+ GND
O------- ------ O
W 6 U 1 4 0 W B F
C o n d itio n
PCM te rm in a l 71 o r
97 v o lta g e (V)
Ignition switch OFF Below 1.0
Ignition switch ON B+
(6) If not as specified, check the related harness
and main relay continuity.
2. If the SSTs (NGS tester) are used, check in the
following order.
(1) Connect the
SSTs (NGS tester) to the data
link connector.
W6U140WBE
3. if not as specified, replace the main relay.
H A R N E S S
B A T T E R Y W6U140WBJ
0 1 -4 0 A -3 0