2005 MITSUBISHI 380 check engine

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-14
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958.
1. Connect Diagnostic Tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select the "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it
matches the vehicle whose CAN bus lines will be
diagnosed.
If the information is correct, go to step 8.
If not, go to step 5.
5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again
that it matches the vehicle which is diagnosed CAN bus line.
If they match, go to step 8.
If not, go to step 5.
8. Press the "OK" button.
9. When the optional equipment screen is displayed, choose
the one which the vehicle is fitted with, and then select the
"OK" button.
10.Turn the ignition switch to the "LOCK" (OFF) position.
11.Disconnect Diagnostic Tool MB991958.
DIAGNOSTIC TROUBLE CODE CHARTM1172002200295
Check according to the inspection chart that is
appropriate for the diagnostic trouble code.
DTC NO. INSPECTION ITEM REFERENCE PAGE
P0830 Clutch switch system
P.17-15
P1564 Auto-cruise control switch system
P.17-20
P1575 Cancel latch signal system
P.17-34
P1571 Stoplamp switch system
P.17-35
P1574
Engine ECU and its related componentsP.17-50

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-15
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC P0830: Clutch Switch (5M/T Only)
.
CIRCUIT OPERATION
A 5 Volt power supply is applied to the clutch
switch output terminal (terminal No. 1) from the
ENGINE-ECU(terminal No. B-21 pin 41) when
the clutch pedal is applied the power supply is
switched to earth.
.
TECHNICAL DESCRIPTION
The ENGINE-ECU uses the clutch switch earth-
ing as a signal that clutch pedal has been
applied.
.
DTC SET CONDITIONS
Check Conditions
Vehicle speed is above 50 km/h.Judgement Criteria
Gear shift is above 5 times.
Clutch control is below 2 times.
No MIL.
No Limp home.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
Clutch switch failed
Harness damage in clutch switch circuit, or con-
nector damage.
Refer to component locations GROUP-70
Refer to configuration diagrams GROUP-80
Refer to circuit diagrams GROUP-90
DIAGNOSIS
Required Special Tools:
: Diagnostic tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: USB Cable
MB991910: Main Harness A

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-16
STEP 1. Using diagnostic tool , check data list item 78:
Clutch Switch.
To prevent damage to diagnostic tool , always turn the
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting diagnostic tool .
(1) Connect diagnostic tool to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set diagnostic tool to the data reading mode for item 78,
Clutch Switch.
When the clutch pedal is depressed the display on diag-
nostic tool should read "ON".
When the clutch pedal is released the display on diag-
nostic tool should read "OFF".
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the switch operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
How to
Cope with Intermittent Malfunctions 00-14.
NO : Then go to Step 2.
STEP 2. Check the clutch pedal adjustment and switch
operation.
Refer to GROUP 21A, Clutch - On-vehicle Service - Clutch
Pedal Check and Adjustment P.21A-2
Q: Is the pedal and switch adjustment correct?
YES : Go to Step 3.
NO : Adjust the pedal or replace the switch if damaged or
not operating correctly. Then go to Step 6.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-17
STEP 3. Measure the clutch switch power supply voltage
by backprobing the clutch switch connector C-07 (terminal
1).
(1) Measure the voltage between terminal No. 1 and ground.
Voltage should be battery positive voltage.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 5.
NO : Then go to Step 4.
STEP 4. Check harness connector C-07 at Clutch switch
for damage, loose or corroded terminals .
Q: Is the harness connector in good condition?
YES : Then go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection 00E-2. Then go to Step 6.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-18
STEP 4. Measure the power supply voltage at ENGINE-ECU
connector B-21 by using ENGINE-ECU check harness
special tool MB992044.
(1) Disconnect the all ENGINE-ECU connectors and connect
ENGINE-ECU check harness special tool MB992044
between the separated connectors.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 41 and ground.
Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Repair or replace the open or damaged wiring circuit
between ENGINE-ECU connector B-21 and Clutch
switch connector C-07. Then go to Step 8.
NO : Check the connector B-21 for damage and ensure
check harness connection t ENGINE-ECU is correct.
If connection is correct and no power supply is
present at terminal 41 of ENGIN-ECU then replace it.
Then go to Step 7.
STEP 5. Measure the clutch switch power supply voltage
by backprobing the clutch switch connector C-07 (terminal
2).
(1) Measure the voltage between terminal No. 2 and ground by
backprobing. while depressing the clutch pedal.
When pedal is not depressed an (open circuit) , voltage
should be battery positive voltage.
When pedal is depressed an (closed circuit) , voltage
should be less than 1.0 volt.
Q: Is there battery voltage at terminal No. 2 when pedal is
depressed?
YES : Go to Step 6.
NO : Replace the Clutch switch. Refer to GROUP 21A,
Clutch - On-vehicle Service - Clutch Pedal Check and
Adjustment P.21A-2. Then go to Step 7.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-21
CIRCUIT OPERATION
This circuit judges the signals of each switch
("COAST/SET", "ACC/RES" and "CANCEL") of the
auto-cruise control switch. The Engine ECU detects
the state of the auto-cruise control switch by sensing
the voltages shown below.
When all switches are OFF: 4.7 5.0 volts
When the "CRUISE" (MAIN) switch is "ON": 0
0.3 volt
When the "COAST/SET" switch is ON: 2.0 2.8
volts
When the "ACC/RES" switch is ON: 3.3 4.1
volts
When the "CANCEL" switch is ON: 0.8 1.5 volts
.
DTC SET CONDITIONS
Check Condition
The "CRUISE" indicator lamp illuminates.Judgement Criteria
If the auto-cruise control switch is operated, this
DTC will be set when the Engine ECU terminal
voltage is different from the standard value.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CASE:)
Malfunction of the auto-cruise control switch.
Malfunction of the clock spring.
Damaged harness or connector.
Malfunction of the Engine ECU.
Circuit drawings
Refer to circuit diagrams GROUP-90
Refer to configuration diagrams GROUP-80
Refer to component locations GROUP-70
DIAGNOSIS
Required Special Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A
MB991223: Harness Set
MB992044: ENGINE-ECU Check Harness

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-22
STEP 1. Using Diagnostic Tool MB991958, check data list
item 86: Main Switch, list item 92: Set Switch, item 91:
Resume Switch and list item 75: Cancel Switch.
To prevent damage to Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958.
(1) Connect Diagnostic Tool MB991958 to the data link
connector. (Refer to P.17-11).
(2) Turn the ignition switch to the "ON" position.
(3) Set Diagnostic Tool MB991958 to data reading mode for
auto-cruise control system. (Refer to P.17-11).
Item 86: Main Switch.
When "CRUISE" (MAIN) switch is at the "ON" posi-
tion, the display on Diagnostic Tool MB991958
should be "ON".
When ""CRUISE" (MAIN) switch is at the "OFF"
position, the display on Diagnostic Tool MB991958
should be "OFF".
Item 92: Set Switch.
When "COAST/SET" switch is at the "ON" position,
the display on Diagnostic Tool MB991958 should be
"ON".
When "COAST/SET" switch is at the "OFF" position,
the display on Diagnostic Tool MB991958 should be
"OFF".
Item 91: Resume Switch.
When "ACC/RES" switch is at the "ON" position, the
display on Diagnostic Tool MB991958 should be
"ON".
When "ACC/RES" switch is at the "OFF" position,
the display on Diagnostic Tool MB991958 should be
"OFF".
Item 75: Cancel Switch.
When "CANCEL" switch is at the "ON" position, the
display on Diagnostic Tool MB991958 should be
"ON".
When "ACC/RES" switch is at the "OFF" position,
the display on Diagnostic Tool MB991958 should be
"OFF".
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect Diagnostic Tool MB991958.
Q: Is the switch operating properly?
YES : Go to Step 17.
NO : Go to Step 2.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-24
STEP 4. Check Engine ECU connector B-21 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 5.
NO : Repair the faulty connector if possible or as
recommended, replace complete wiring harness.
(Refer to GROUP 00E, Harness Connector Inspection
P.00E-2). Install the air bag module (driver’s side).
(Refer to GROUP 52B, Air Bag Modules and Clock
Spring P.52B-237). Then go to Step 18.
STEP 5. Check the harness for short circuit to ground
between the Engine ECU connector B-21 terminal 14 and
the auto-cruise control switch connector C-302 terminal 2.
(1) Disconnect Engine ECU connector B-21 and measure at
the harness connector side.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Measure the continuity between Engine ECU connector
B-21 terminal 14 and ground.
(4) Reconnect Engine ECU connector B-21.
Q: Is the measured continuity open circuit?
YES : Install the air bag module (driver’s side). (Refer to
GROUP 52B, Air Bag Modules and Clock Spring
P.52B-237). Then go to Step 17.
NO : Go to Step 6.