ON-BOARD DIAGNOSTIC
DTC P1250
Except for GF4A-EL Models
DTC P1250
Pressure regulator control (PRC) valve circuit malfunction
DETECTION
CONDITION
PCM monitors PRC solenoid control signal at PCM terminal 95. If PCM turns PRC sorenoid valve on
and off but voltage at PCM terminal 95 does not change, PCM determines that PRC solenoid valve
circuit has malfunction.
POSSIBLE
CAUSE
PRC solenoid valve malfunction
Connector or terminal malfunction
Short to ground in wiring between PRC solenoid valve terminal B and PCM terminal 95
Open circuit in wiring between main relay terminal D and PRC solenoid valve terminal A
Open circuit in wiring between PRC solenoid valve terminal B and PCM terminal 95
PCM malfunction
FRO M MAIN
RELAY
TER M IN A L D
PCM
PRC S O LEN O ID VALVE
nrpn
PCM
HAR NESS SID E C O N N E C TO R
(VIEW FRO M T E R M IN A L SIDE)
.rW
i'IO
M
'l'i'I'l'!.
t-T T i l l i l I I I I H
X
i
HARNESS SIDE CONNECTO R
(VIEW FROM TERM IN AL SIDE)
95
Diagnostic procedure
STEP
INSPECTION
ACTION
1
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to available
Service information.
• If vehicle is not repaired, then go to next step.
No
Go to next step.
2
CLASSIFY INTERMITTENT CONCERN OR
CONTINUOUS CONCERN
• Turn ignition key to OFF then ON (Engine
OFF).
• Is same DTC present?
Yes
Go to next step.
No
Refer to intermittent concern.
(See F1-142 N0.26 INTERMITTENT CONCERNS)
3
CLASSIFY OPEN CIRCUIT OR SHORT TO
GROUND MALFUNCTION
• Disconnect PRC solenoid valve tube that
connects to intake manifold.
• Connect vacuum pump to PRC solenoid
valve.
• Pump vacuum pump several times and stop
to pumps then wait a few seconds.
• Is vacuum maintained?
Yes
Go to next step.
No
Go to Step 5.
F 1-68
Summary of Contents for 626 Station Wagon
Page 25: ...CONTROL SYSTEM WIRING DIAGRAM With Immobilizer System OUTLINE F1 4 ...
Page 183: ...CONTROL SYSTEM COMPONENT LOCATION F2 7 ...
Page 204: ...MANUAL TRANSAXLE FEATURES OUTLINE J 2 OUTLINE OF CONSTRUCTION J 2 SPECIFICATIONS J 2 D J 1 ...
Page 266: ...SHIFT MECHANISM 6 Apply grease to the cam as shown K2 59 ...
Page 418: ...TROUBLESHOOTING KEYLESS ENTRY SYSTEM ON BOARD DIAGNOSTIC FUNCTION S 37 ...
Page 454: ...WARNING AND INDICATOR SYSTEM O p e ra tin g O rd e r T 32 ...