Mazda MX-6 1998, Workshop Manual, Page: 760 / 1282

TROUBLESHOOTING [GF4A-EL]
DTC P0745 Pressure control solenoid m alfunction
DESCRIPTION
• Damaged wiring or connectors between pressure control solenoid and powertrain control module
• Short or open circuit in pressure control solenoid
• Short or open circuit in powertrain control module internal transistors
POSSIBLE
CAUSE
• Damaged wiring or connectors between pressure control solenoid and powertrain control module
• Short or open circuit in pressure control solenoid
• Short or open circuit in powertrain control module internal transistors
STEP
INSPECTION ACTION
1 Are powertrain control module and pressure
control solenoid connections at connector and
connector pins okay?
Yes Go to next step
No Repair or replace connector(s), then go to step 7
2 Check NGS tester display
• Connect NGS tester to data link connector
• Are pressure control solenoid operation and
NGS tester display correct?
ST 0 1 -40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
Yes Go to step 7
No Go to next step
3 Check for continuity between terminals of
pressure control solenoid and powertrain control
module
• Disconnect negative battery cable
• Disconnect solenoid connector and powertrain
control module connectors
• Is there continuity between terminals?
Yes
Go to next step
No Repair or replace connectors and wiring, then go to step 7
4
Check for a short circuit between terminals of
pressure control solenoid and powertrain control
module.
• Disconnect solenoid connector and powertrain
control module connector.
• Connect ohmmeter between GND and
pressure control solenoid connector terminal
• Is continuity present?
Yes
Repair short circuit, then go to step 7
No Go to next step
5 Measure resistance between pressure control
solenoid terminals
• Disconnect negative battery cable
• Disconnect solenoid connector
• Is resistance between terminals correct?
sr 05-17B SOLENOID VALVES INSPECTION
[GF4A-EL]
Yes Go to next step
No Replace pressure control solenoid, then go to step 7
s t
0 5 -1 7B SOLENOID VALVES
REMOVAL/INSTALLATION [GF4A-EL]
6 After diagnostic trouble code has been cleared,
recheck if diagnostic trouble code is shown
tr 0 1 -0 1 B ENGINE ON-BOARD DIAGNOSIS
[KL]
Yes Return to step 2
No Problem is a temporary poor connection of wiring or
connectors, and should be investigated further, then go to
next step
7 Erase diagnostic trouble code from memory. Can
code be output after performing “After Repair
Procedure”?
Yes Go to appropriate inspection procedure
No Finished
0 5 -0 1 B -1 4