Mitsubishi Eclipse. Manual — part 571
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-827
STEP 13. Check for harness damage between power
steering pressure switch connector B-19 (terminal No. 1)
and ECM connector C-58 (terminal No. 54) <M/T> or PCM
connector C-55 (terminal No. 52) <A/T>.
AK300437
1
CONNECTOR: B-19
AB
B-19
HARNESS CONNECTOR:
COMPONENT SIDE
AK300462
42
43
48
49
50
51
52
53
54
55
56
57
46 45 44
58
59
60
61
62
63
64
65
66
47
41
CONNECTOR: C-55 <A/T>
C-55 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300748
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
CONNECTOR: C-58 <M/T>
AB
C-58 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-828
NOTE: Check harness after checking intermediate connector
B-47. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
. Then go to Step 14.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.
STEP 14. Using scan tool MB991958, check data list item
27: Power Steering Pressure Switch.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item
27, Power Steering Pressure Switch.
• If the steering wheel is stopped while idling, "OFF" will
be displayed.
• If the steering wheel is steered while idling, "ON" will be
displayed.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
YES : The inspection is complete.
NO : Retry the troubleshooting.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-829
DTC P0554: Power Steering Pressure Switch Circuit Intermittent
.
CIRCUIT OPERATION
• A battery positive voltage is applied to the power
steering pressure switch output terminal (terminal
1) from the ECM (terminal 54) or PCM (terminal
52) <A/T> via the resistor in the ECM <M/T> or
PCM <A/T>.
.
TECHNICAL DESCRIPTION
• The power steering pressure switch converts the
existence of a power steering load into a high/low
voltage, and inputs it into the ECM <M/T> or PCM
<A/T>.
AK000708
1
YELL
OW
1
YELL
OW
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
POWER STEERING
PRESSURE SWITCH
B-19
1
54 <M/T>
52 <A/T>
B-47
MU802653
1
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58 <M/T>
(MU803782)
C-55 <A/T>
(MU803781)
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58 59
60 61 62 63
64 65 66
47
41
Power Steering Pressure Switch Circuit
AK300083
CONNECTOR: B-19
POWER
STEERING
PRESSURE
SWITCH
POWER STEERING
OIL PUMP
AB
B-19
AK300244
CONNECTOR: C-55 <A/T>
AG
PCM
C-55 (GR)
AK300091
CONNECTOR: C-58 <M/T>
ECM
AC
C-58 (GR)
AK300087
CONNECTOR: B-47
AB
B-47 (B)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-830
• When the steering wheel is turned, hydraulic
pressure rises. The power steering pressure
switch closes, and the applied battery positive
voltage will be grounded. With this, the power
steering pressure switch output voltage will fluc-
tuate between 12 volts and 0 volt.
• While driving with the steering wheel held
straight, the power steering pressure switch turns
"OFF".
• The ECM <M/T> or PCM <A/T> checks whether
the power steering pressure switch turns "OFF"
or "ON" during driving.
.
DESCRIPTIONS OF MONITOR METHODS
Power steering pressure switch changes from off to
on more than 10 times for 1 second.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Engine coolant temperature sensor
.
LOGIC FLOW CHART
.
DTC SET CONDITIONS
Check Conditions
• Engine coolant temperature is higher than 30°C
(86
°F).
• Vehicle speed is higher than 50 km/h (31 mph).
Judgment Criteria
• The ON/OFF frequency of a power steering pres-
sure switch is 10 Hz or more for 20 seconds.
.
OBD-ll DRIVE CYCLE PATTERN
None.
.
START
END
NO
NO
YES
YES
YES
NO
MALFUNCTION
GOOD
CONTINUOUS FAILURE
FOR 20secs
FREQUENCY > 10Hz
MONITORING
CONDITIONS
AK301790
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст