2004 MITSUBISHI ENDEAVOR Egr valve

Malfunction of the hydraulic unit (integrated with ABS-ECU)
PAST TROUBLE
Carry out diagnosis with particular emphasis on connector(s) or wiring harness
in the power supply circuit (terminal 1) to the ABS-ECU solenoid valve or
ground circuit (terminal 18). For diagnosis procedures, refer to HOW TO TREAT PAST TROUBLE
.
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A
MB991970: ABS Check Harness
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
1. Connect scan tool MB991958 to the data link connec
tor. CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Fig. 75: Solenoid Valve And Motor Power Supply Circuit Diagra
m
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
The ABS-ECU contains the power supply circuit (terminal 1) for the solenoid
valve. The solenoid valve is energized by the valve relay, which is
incorporated in the ABS-ECU. The valve relay, which is incorporated in the ABS-ECU, is always energizing
the solenoid valve unless the initial check is in progress when the ignition
switch is turned on.
ABS DTC SET CONDITIONS
These diagnostic trouble codes will be set under the cases below.
DTC C1278 (Valve relay OFF failure) After the ABS-ECU turned on the valve relay, the solenoid valve is not
energized (valve relay OFF failure).
DTC C1278 (Valve relay ON failure) After the ABS-ECU turned off the valve relay, the solenoid valve still remains
energized (valve relay ON failure).
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THESE DTCS ARE TO SET ARE:)
Current trouble
Damaged wiring harness or connector Malfunction of the hydraulic unit (integrated with ABS-ECU)
PAST TROUBLE Carr
y out dia
gnosis with
particular em
phasis on connector
(s) or wirin
g harness in CAUTION: If there is any problem in the CAN bus lines, an
incorrect diagnostic trouble code may be set. Prior to
this diagnosis, diagnose the CAN bus lines.

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

SOLENOIDS & SOLENOID VALVES SOLENOIDS & SOLENOID VALVES LOCATION Photo Sensor
Top front center of dash.Fig. 58
.
Right Bank Heated Oxygen Sensor
(Front)
On inlet of right catalytic
converter.Fig. 42
.
Right Bank Heated Oxygen Sensor
(Rear)
On outlet of right catalytic
converter.Fig. 54
.
Seat Slide Sensor
Under left front seat. See Fig. 68
.
Side Impact Sensor (Left)
At base of left "B" pillar. See Fig. 69
.
Side Impact Sensor (Right)
At base of right "B" pillar. See Fig.
69 .
Steering Wheel Sensor
On steering column. See Fig. 57
.
Throttle Position Sensor
On throttle body assembly.Fig. 44
.
Tire Pressure Sensor (4)
Inside tire. (integral to TPMS
transmitter). See Fig. 65
.
Transmission Fluid Temperature
Sensor
In A/T control solenoid valve
assembly.Fig. 56
.
Wheel Speed Sensor (Left/Right Front)
At respective front wheel. See Fig. 66
.
Wheel Speed Sensor (Left/Right Rear)
At respective rear wheel. See Fig. 70
.
Component
Location
ABS Solenoid Valve
Right rear of engine compartment.Fig.
71 .
A/T Control Solenoid Valve Assembly
Connector
Left side of engine compartment. See
Fig. 56
.
Evaporative Emission Purge Solenoid
Center rear of engine
compartment.Fig. 72
.
Evaporative Emission Ventilation
Solenoid
Near fuel tank, on evaporative
emission canister. See Fig. 75
.
Exhaust Gas Recirculation Valve
Left side of engine compartment.Fig.
73 .
Injector 2, 4, 6 (B-29, B-03, B-04)
Top of engine.Fig. 78
.

2004 Mitsubishi Endeavor LS
2004 MITSUBISHI Endeavor

Mixture Check)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check that the basic ignition timing is within the standard value.
Standard value: 5° BTDC+/-3°
4. Start the engine and increase the engine speed to 2,500 r/min for 2 minutes.
5. Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
Standard value:
CO contents: 0.5% or less
HC contents: 100 ppm or less
7. If the CO and HC contents do not remain inside the standard value, check the
following items:
Diagnostic output Closed-loop control (When the closed-loop control is carried out normally, the
output signal of the heated oxygen sensor changes between 0 - 400 mV and
600 - 1,000 mV at idle.) Fuel pressures Injector Ignition coil, spark plug EGR system and EGR valve leak Evaporative emission system Compression pressure
COMPRESSION PRESSURE CHECK Re
quired S
pecial Tool
:
NOTE: Replace the catalytic converter when the CO and HC
contents do not remain inside the standard value, even
though the result of the inspection is normal for all items.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU)
Past trouble
Carry out diagnosis with particular emphasis on connector(s) or wiring harness
in the power supply circuit (terminal 11) to the TCL/ASC-ECU solenoid valve
or ground circuit (terminal 12). For diagnosis procedures, refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
).
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A
MB991970: ABS Check Harness
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
1. Connect scan tool MB991958 to the data link connec
tor. CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
CIRCUIT OPERATION
The TCL/ASC-ECU contains the power supply circuit (terminal 11) for the
solenoid valve. The solenoid valve is energized by the valve relay, which is
incorporated in the TCL/ASC-ECU. The valve relay, which is incorporated in the TCL/ASC-ECU, is always
energizing the solenoid valve unless the initial check is in progress when the
ignition switch is turned on.
TCL/ASC DTC SET CONDITIONS These diagnostic trouble codes will be set under the cases below. DTC C1278 (VALVE RELAY OFF FAILURE)
After the TCL/ASC-ECU turned on the valve relay, the solenoid valve is not
energized (valve relay OFF failure).
DTC C1278 (VALVE RELAY ON FAILURE)
After the TCL/ASC-ECU turned off the valve relay, the solenoid valve still
remains energized (valve relay ON failure).
TROUBLESHOOTING HINTS (The most likely causes for these DTCs are to set are:)
Current trouble
Damaged wiring harness or connector Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU)
Past trouble Carry out diagnosis with particular emphasis on connector(s) or wiring harness in
the power supply circuit (terminal 11) to the TCL/AS
C-ECU solenoid valve or CAUTION: If there is any problem in the CAN bus lines, an
incorrect diagnostic trouble code may be set. Prior to
this diagnosis, diagnose the CAN bus lines.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor