Mazda MX-6 1998, Руководство по ремонту, Страница: 682 / 1282

TROUBLESHOOTING [LA4A-EL]
Pinpoint Test
Pinpoint test A
P0750
P0755
P0731
P0732
DTC P0733
U l ° P0734
P0751
P0756
P1751
P1756
Shift solenoid No.1 (SS1) circuit failure
Shift solenoid No.2 (SS2) circuit malfunction
SS1, SS2, or Internal parts Incorrect 1GR ratio
SS1, SS2, or internal parts incorrect 2GR ratio
SS1, SS2, or internal parts incorrect 3GR ratio
SS1, SS2, or internal parts incorrect 4GR ratio
551 hydraulic/mechanical malfunction
5 5 2 hydraulic/mechanical malfunction
551 circuit failure
5 5 2 electrical malfunction
DESCRIPTION
This pinpoint test is intended to diagnose the following components:
• Transaxle wiring harness, SS1, SS2, power circuit
• PCM
POSSIBLE
CAUSE
• Engine: Performance, cooling, brakes
• Electrical: Battery, input sensors, wiring harnesses
• Transaxle: Internal transaxle components, linkages, cooling
STEP
INSPECTION ACTION
A1 ELECTRONIC DIAGNOSTICS
• Check that the solenoid body connector is fully
seated, terminals are fully engaged in the
connector and in good condition before
proceeding.
• Connect NGS tester.
• Perform KOEO test until continuous memory
DTC have been displayed.
• Enter output test mode.
o - 0 1 -0 1 A ENGINE ON-BOARD DIAGNOSIS
[FS]
• Select SS1 and SS2 PIDs.
• Cycle SS1 OFF/ON by selecting stop/start
mode in output test mode “ALL ON”.
• Set “ALL OFF” mode.
• Cycle SS2 ON/OFF by selecting STOP/START
mode In output test mode.
• Does SS1 and SS2 PIDs cycle?
Yes Go to next step.
No If vehicle did not enter output state (Diagnostic test mode
(DTM)).
o - 0 1 -0 1 A ENGINE ON-BOARD DIAGNOSIS [FS]
A2
CHECK ELECTRICAL SIGNAL OPERATION
Caution
• Removing the solenoid body connector by
prying with a screwdriver will damage the
connector. Remove the solenoid body
connector by pushing on the wire tab and
pulling on the wiring harness.
• Disconnect solenoid body connector.
• Using a mirror, inspect both ends of the
connector for damaged or pushed out pins,
corrosion, loose wires, and missing or
damaged seals.
• Refer to connector schematic and table of
solenoid body.
o - Solenoid Body Connector Component
• Connect volt-ohm meter (VOM)/digital volt-ohm
meter (DVOM) positive test lead to power
circuit and negative test lead to the suspected
solenoid circuit of the transaxle vehicle
harness connector.
• VOM/DVOM ON 20 Volt scale.
• While observing DVOM, (Follow procedures
described in step A1) cycle solenoid output ON
and OFF.
• Does the suspected solenoid output voltage
change at least 0.5 volt?
Yes Go to A5.
No Go to next step.
0 5 -0 1 A -7