Page 2555 of 3870
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 5 and ground.
Fig. 25: Measuring Voltage
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is battery voltage (approximately 12 volts) present?
YES: Go to Step 5.
NO: Go to Step 3.
STEP 3. Check immobilizer-ECU connector C-310-1 and MFI relay
connector B-15X for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2557 of 3870
Fig. 27: Identifying Connector C
-310
-1
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are immobilizer-ECU connector C-310-1 and MFI relay connector B-
15X in good condition?
YES: Go to Step 4.
NO: Repair or replace the damaged component(s). Confirm that scan tool
MB991958 communicates normally.
STEP 4. Check the harness wires between immobilizer-ECU connector C-
310-1 (terminal 5) and MFI relay connector B-15X (terminal 4).
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2562 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Fig. 32: Identifying Connector C
-310
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the harness wires between immobilizer-ECU connector C-310-1
(terminal 5) and MFI relay connector B-15X (terminal 4) in good
condition?
YES: There is no action to be taken.
NO: Replace damaged component(s). Confirm that scan tool MB991958
communicates normally.
STEP 5. Measure the resistance at immobilizer-ECU connector C-310.
1. Do not disconnect immobilize
r-ECU connector C-31
0-1.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2574 of 3870
Fig. 43: Identifying Connectors
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION The Immobilizer-ECU is energized by the MFI relay when the ignition switch is
turned "ON". The PCM transmits a signal from scan tool MB991958 to the
immobilizer-ECU as it is. In the same way, a signal from the immobilizer-ECU is
also transmitted to scan tool MB991958 as it is. TECHNICAL DESCRIPTION (COMMENT)
This malfunction may be caused by a defective immobilizer-ECU, PCM, or a
defect in the communication line between the immobilizer-ECU and PCM. If
this malfunction appears when the MFI system and scan tool MB991958 can
communicate each other, MFI system DTC P0513 will reset. If the MFI system is normal, the MFI relay can be determined as normal. In
addition, if the MFI system and scan tool MB991958 can communicate each
other, the circuits between the data link connector and the PCM can determined
as normal.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2579 of 3870
Fig. 46: Measuring Voltage Between Terminal 1 And Ground
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the measured voltage approximately 12 volts (battery positive
voltage)?
YES: Go to Step 5.
NO: Go to Step 3.
STEP 3. Check immobilizer-ECU connector C-39 and MFI relay
connector B-15X for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2580 of 3870
Fig. 47: Check Immobilizer
-ECU MFI Relay Connector B
-15X For Loose
Corroded Or Damaged Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2581 of 3870
Fig. 48: Check Immobilizer
-ECU Connector C
-39 For Loose Corroded Or
Damaged Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are immobilizer-ECU connector C-39 and MFI relay connector B-15X
in good condition?
YES: Go to Step 4.
NO: Repair or replace the component(s). Confirm that scan tool
MB991958 communicates normally.
STEP 4. Check the wiring harness between immobilizer-ECU connector
C-39 (terminal 1) and MFI relay connector B-15X (terminal 4).
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2586 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Fig. 53: Checking Connector C
-310
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the wiring harness between immobilizer-ECU connector C-39
(terminal 1) and MFI relay connector B-15X (terminal 4) in good
condition?
YES: There is no action to be taken.
NO: Repair the wiring harness. Confirm that scan tool MB991958
communicates normally.
STEP 5. Measure the resistance at immobilizer-ECU connector C-39.
1. Do not disconnect immobilize
r-ECU connector C-39.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
