MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 13: Connecting Scan Tool MB991958


2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

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.
2. Turn the ignition switch to the "ON" position.
3. Use scan tool MB991958 to check immobilizer system diagnostic trouble
codes.
4. Turn the ignition switch to "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Which DTC is output, DTC 11 or 12?
DTC12 is set : Refer to DTC 12: ENCRYPTED CODES ARE NOT
THE SAME OR NOT REGISTERED
.
DTC11 is set : Go to Step 4.
STEP 4. Check the ignition key ring antenna.
1. Disconnect the key reminder switch connector C-310.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 14: Disconnecting Key Reminder Switch Connector C
-310

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2. Measure the resistance value between terminal number 3 and terminal
number 7 by backprobing.
The measured value should be 2 ohm or less.
Q: Is the check result normal?
YES: Go to Step 5.
NO: Replace the ignition key ring antenna. Retest the system.
Fig. 15: Measuring Resistance Value Between Terminal Number 3
And Terminal Number 7

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2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

STEP 5. Check Immobilizer-ECU connector C-39 and key reminder
switch connector C-310 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Fig. 16: Checking Immobilizer
-ECU Connector C
-39
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2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 17: Identifying Connector C
-310

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Q: Are immobilizer-ECU connector C-39 and key reminder switch
connector C-310 in good condition?
YES: Go to Step 6.
NO: Repair or replace the damage component(s). Confirm that scan tool
MB991958 communicates normally.
STEP 6. Check the wiring harness between immobilizer-ECU connector
C-39 (terminal 7 and 8) and key reminder switch connector C-310
(terminal 7 and 3).

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 18: Identifying Connector C
-39
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2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 19: Identifying Connector C310

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Q: Are the wiring harness between immobilizer-ECU connector C-39
(terminal 7 and 8) and key reminder switch connector C-312 (terminal 7
and 3) in good condition?
YES: Replace the immobilizer-ECU and then register the password
(secret code) and encrypted code (Refer to ON
-VEHICLE SERVICE
).
Retest the system.
NO: Repair or replace the damaged component(s). Confirm that scan tool
MB991958 communicates normally.
DTC 12: ENCRYPTED CODES ARE NOT THE SAME OR NOT REGISTERED DTC SET CONDITION The encr
ypted code sent b
y the trans
ponder is not the same encr
ypted code which is

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

registered in the immobilizer-ECU. TROUBLESHOOTING HINTS
The encrypted code in the ignition key has not been properly registered Malfunction of immobilizer-ECU
DIAGNOSIS Was the encrypted code registered?
YES: Replace the immobilizer-ECU and then re-register the encrypted code
(Refer to ON
-VEHICLE SERVICE
).
NO: Register the encrypted code (Refer to ON
-VEHICLE SERVICE
).
SYMPTOM CHART NOTE: DTC 12 is always output together with MFI system DTC
P0513.
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 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 20: Symptom Chart

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SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: COMMUNICATION WITH SCAN TOOL MB991958 IS IMPOSSIBLE. < UP TO
DECEMBER 2003 >
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 21: Immobilizer
-ECU Power Supply Ground and PCM Communication
Line Circuit Diagram & Connector Identification

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2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor