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LONG STOPPING DISTANCES ON LOOSE ROAD SURFACESWhen braking on loose surfaces like snow-covered or gravel roads, the stopping
distance can be longer for an ABS-equipped vehicle than the stopping distance for a
vehicle with a conventional brake system. SHOCK AT STARTING CHECK Shock may be felt when the brake pedal is lightly pressed while driving at a low
speed. This is a normal characteristic because the ABS system operation check is
carried out when vehicle speed is 8 km/h (5 mph) or less. ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS INTRODUCTION TO ANTI-LOCK BRAKING SYSTEM DIAGNOSIS The anti-lock braking system (ABS) operates differently from conventional brake
systems. These differences include sounds, sensations, and vehicle performance that
owners and service technicians who are not familiar with ABS may not be used to.
Some operational characteristics may seem to be malfunctions, but they are simply
signs of normal ABS operation. When diagnosing the ABS system, keep these
operational characteristics in mind. Inform the owner of the kind of performance
characteristics to expect from an ABS-equipped vehicle. ABS DIAGNOSTIC TROUBLE CODE DETECTION CONDITIONS ABS diagnostic trouble codes (ABS DTCs) are set under different conditions,
depending on the malfunction detected. Most ABS DTCs will only be set during
vehicle operation. Some ABS DTCs will also be set during the ABS self-check
immediately after the engine is started.
When you check if an ABS DTC will be displayed again after the DTC has been
erased, you should duplicate the ABS DTC set conditions. Depending on the
detection timing and set conditions for the specific ABS DTC, you must either drive
the vehicle or turn the engine off and restart it. To set the proper conditions for that
DTC again, refer to ABS DTC SET CONDITIONS
for each ABS DTC that you
are trying to reset.
ABS DIAGNOSTIC TROUBLESHOOTING STRATEGY
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor
Page 2103 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?
YES:
Replace the A/C-ECU. On completion, check that the DTC is not reset.
NO:
There is an intermittent malfunction such as poor engaged connector(s) or
open circuit (Refer to
HOW TO USE TROUBLESHOOTING/
INSPECTION SERVICE POINTS
).
DTC B1061, B1062: MODE SELECTION DAMPER CONTROL MOTOR AND POTENTIOMETER Fig. 73: View Of Mode Selection Damper Control Motor Potentiometer CircuitCourtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result satisfactory?
YES:
There is an intermittent malfunction such as poor engaged connector
(s) or open circuit (Refer to
HOW TO USE TROUBLESHOOTING/
INSPECTION SERVICE POINTS
).
NO:
Replace the A/C-ECU. On completion, check that the DTC is not
reset.
DTC U1100: POWERTRAIN CONTROL MODULE TIME-OUT (RELATED TO ENGINE) TROUBLE JUDGMENT The A/C-ECU receives engine control system-related signal from the powertrain
control module. If the ECU cannot receive the signal, DTC U1100 will be set. TECHNICAL DESCRIPTION (COMMENT)
CURRENT TROUBLE
Connector(s) or wiring harness in the CAN bus lines between the powertrain
control module and the A/C-ECU, the power supply system to the powertrain
control module, the powertrain control module itself, or the A/C-ECU may be
defective.
PAST TROUBLE
If DTC U1100 is stored as a past trouble, carry out diagnosis with particular
emphasis on wiring and connector(s) in the CAN bus line between the A/C-
ECU
and the powe
rtrain
control m
odu
le, and the powe
r supp
ly syste
m to the
CAUTION: If DTC U1100 is set in the A/C-ECU, diagnose the
CAN main bus line.
CAUTION: Whenever the ECU is replaced, ensure that the
communication circuit is normal.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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NO:
Replace the A/C-ECU. On completion, check that the DTC is not
reset.
DTC U1111: MULTI-CENTER DISPLAY UNIT (MIDDLE GRADE TYPE) TIME-OUT TROUBLE JUDGMENT The A/C-ECU receives signals from the multi-center display unit (middle grade
type). If the ECU cannot receive the signal related to the multi-center display unit,
DTC U1111 will be set. TECHNICAL DESCRIPTION (COMMENT)
CURRENT TROUBLE
Connector(s) or wiring harness in the CAN bus lines between the A/C-ECU
and the middle-grade multi-center display unit, the power supply system to the
display unit, the display unit itself, or the A/C-ECU may be defective.
PAST TROUBLE
When DTC U1111 is set as a past trouble, carry out diagnosis with particular
emphasis on connector(s) or wiring harness in the CAN bus lines between the
A/C-ECU and the middle-grade multi-center display unit, the power supply
system to the display unit. If the connectors and wiring are normal, and
obviously the ECU or the middle-grade multi-center display is the cause of the
trouble, replace the ECU or the middle-grade multi-center display. If in doubt,
do not replace the ECU or the display unit.
CAUTION: If DTC U1111 is set in the A/C-ECU, diagnose the
CAN main bus line.
CAUTION: Whenever the ECU is replaced, ensure that the
communication circuit is normal.
NOTE: For a past trouble, you cannot find it by the scan tool CAN
bus diagnostics even if there is a failure in the CAN bus
lines. In this case, refer to HOW TO USE
TROUBLESHOOTING/ INSPECTION SERVICE POINTS
). and
2004 Mitsubishi Endeavor LS
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Check if a DTC, which relates to CAN communication-linked systems below,
is set.
ETACS-ECU
DTC indicating a time-out error of middle-grade multi-center display unit
1. Turn the ignition switch to the "ON" position.
2. Check for a DTC related to the relevant system.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?
YES:
Go to Step 4.
NO:
Go to Step 5 .
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Check if the DTC is set.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?
YES:
A poor connection, open circuit or other intermittent malfunction is
present in the CAN bus lines between the middle-grade multi-center
display unit and the A/C-ECU (Refer to
HOW TO USE
TROUBLESHOOTING/ INSPECTION SERVICE POINTS
).
NO:
Replace the A/C-ECU. On completion, check that the DTC is not
reset.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Check if the DTC is set.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?
YES:
A poor connection, open circuit or other intermittent malfunction is
present in the CAN bus lines between the middle-grade multi-center
display unit and the A/C-ECU (Refer to
HOW TO USE
TROUBLESHOOTING/ INSPECTION SERVICE POINTS
).
NO:
Replace the middle-grade multi-center display unit. On completion,
check that the DTC is not reset.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Check if the DTC is set.
3. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result satisfactory?
YES:
There is an intermittent malfunction such as poor engaged connector
(s) or open circuit (Refer to
HOW TO USE TROUBLESHOOTING/
INSPECTION SERVICE POINTS
).
NO:
Replace the powertrain control module. On completion, check that
the DTC is not reset.
STEP 5. Recheck for diagnostic trouble code.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Check if the DTC is set.
3. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result satisfactory?
YES:
A poor connection, open circuit or other intermittent malfunction is
present in the lines between the powertrain control module and the A/C-
ECU (Refer to
HOW TO USE TROUBLESHOOTING/ INSPECTION
SERVICE POINTS
).
NO:
Replace the A/C-ECU. On completion, check that the DTC is not
reset.
SYMPTOM CHART
CAUTION: During diagnosis, a DTC code associated with other
system may be set when the ignition switch is turned
on with connector(s) disconnected. On completion,
confirm all systems for DTC code(s). If DTC code(s)
are set, erase them all.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor