Mazda MX-6 1998, Workshop Manual

Page: 531 / 1282

CONTROL SYSTEM [FS]
• Fuel tank pressure sensor terminal A voltage: 8. If terminal voltage is correct and if there is
Ground (Below 1.0 V) harness continuity, replace the fuel tank pressure
• Fuel tank pressure sensor terminal C voltage: sensor.
Constant voltage (4.5— 5.5 V)
(4) If terminal voltage is incorrect, check the
PCM.
POWER STEERING PRESSURE SWITCH 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.
W 6 U U 0 W A 1
(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) Warm up the engine to normal operating
temperature.
(5) Turn the ignition switch to ON.
(6) Measure the voltage at PCM terminal 31.
Specification
Steering wheel condition
PCM terminal 31
voltage (V)
Steering wheel fully turned B+
Steering wheel straight
ahead position
Below 1.0
(7) If not as specified, check the related harness
and power steering pressure switch 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.
W 6 U 1 4 0 W 1 7
BATTERY
W 6 U 1 4 0 W B 2
(2) Warm up the engine to normal operating
temperature.
(3) Turn the ignition switch to ON.
(4) Select the “PID/DATA MONITOR AND
RECORD” function on the NGS tester display
and press TRIGGER.
(5) Select “PSP” on the NGS tester display and
press START. The NGS tester measures and
shows the operation.
Specification
Steering wheel condition
“PSP” operation
Steering wheel fully turned
OFF
Steering wheel straight
ahead position
ON
(6) If not as specified, check the related harness
and power steering pressure switch continuity.
Inspection of Continuity
1. Disconnect the power steering pressure switch
connector.
2. Connect an ohmmeter to the power steering
pressure switch.
3. Start the engine and let it at idle. Check continuity
of the power steering pressure switch while
turning steering wheel.
0 1 -4 0 A -2 6