FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Mitsubishi >> 2006 >> Galant L4-2.4L (4G69) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Driver/Vehicle Information Display >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Inspection Procedure 2

Inspection Procedure 2

INSPECTION PROCEDURE 2: The Multi-center Display does not Show any Information (Middle Grade Type)

Multi-Center Display Power Supply Circuit Part 1:




Multi-Center Display Power Supply Circuit Part 2:






CIRCUIT OPERATION
The multi-center display unit (middle grade type) is energized by the battery through the ignition switch (ACC) and (IG1)

TECHNICAL DESCRIPTION (COMMENT)
The ground circuit, the battery circuit, the ignition switch (ACC) circuit or the ignition switch (IG1) circuit is suspected to be open or defective

TROUBLESHOOTING HINTS
- Malfunction of the multi-center display unit (middle grade type)
- Damaged wiring harness and connectors

DIAGNOSIS

Required Special Tool:
- MB991223: Harness Set

STEP 1 Check the multi-center display unit (middle grade type) ground circuit Measure the resistance at the multi-center display unit (middle grade type) connector C-05




1. Disconnect the multi-center display unit (middle grade type) connector C-05 and measure at the harness side




2. Measure the resistance between terminal 6 and ground
- The measured value should be 2 ohm or less

Q: Does the measured resistance value correspond with this range?

YES: Go to Step 4

NO: Go to Step 2




STEP 2 Check the multi-center display unit (middle grade type) connector C-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector

Q: Is the multi-center display unit (middle grade type) connector C-05 in good condition?

YES: Go to Step 3

NO: Repair or replace the connector Refer to, Harness Connector Inspection








STEP 3 Check the wiring harness between multi-center display unit (middle grade type) connector C-05 (terminal 6) and ground

NOTE: After checking joint connector 2 C-03 for loose, corroded, or damaged terminals, or terminals pushed back in the connector check the wires If joint connector 2 C-03 is damaged, repair or replace the wiring harness Refer to, Harness Connector Inspection

Q: Is the wiring harness between multi-center display unit (middle grade type) connector C-05 (terminal 6) and ground in good condition?

YES: There is no action to be taken

NO: Repair the wiring harness The multi-center display unit (middle grade type) should work normally

STEP 4 Check the multi-center display unit (middle grade type) power supply circuit (battery) Measure the voltage at the multi-center display unit (middle grade type) connector C-05




1. Disconnect the multi-center display unit (middle grade type) connector C-05 and measure at the harness side




2. Measure the voltage between terminal 1 and ground
- The measured value should be approximately 12 volts (battery positive voltage)

Q: Does the measured voltage correspond with this range?

YES: Go to Step 7

NO: Go to Step 5





STEP 5 Check multi-center display unit (middle grade type) connector C-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector

Q: Is multi-center display unit (middle grade type) connector C-05 in good condition?

YES: Go to Step 6

NO: Repair or replace the connector Refer to, Harness Connector Inspection The multi-center display unit (middle grade type) should work normally








STEP 6 Check the wiring harness between C-05 (terminal 1) and battery

NOTE: Also check intermediate connector C-29 and joint connector 1 C-01 for loose, corroded, or damaged terminals, or terminals pushed back in the connector If intermediate connector C-29 and joint connector 1 C-01 is damaged, repair or replace the wiring harness Refer to, Harness Connector Inspection

Q: Is the wiring harness between C-05 and battery in good condition?

YES: There is no action to be taken

NO: Repair the wiring harness The multi-center display unit (middle grade type) should work normally

STEP 7 Check the multi-center display unit (middle grade type) power supply circuit [ignition switch (ACC)] Measure the voltage at the multi-center display unit (middle grade type) connector C-05





1. Disconnect the multi-center display unit (middle grade type) connector C-05 and measure at the harness side
2. Turn the ignition switch to "ACC" position




3. Measure the voltage between terminal 3 and ground by backprobing
- The measured value should be approximately 12 volts (battery positive voltage)

Q: Does the measured voltage correspond with this range?

YES: Go to Step 10

NO: Go to Step 8




STEP 8 Check multi-center display unit (middle grade type) connector C-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector

Q: Is multi-center display unit (middle grade type) connector C-05 in good condition?

YES: Go to Step 9

NO: Repair or replace the connector Refer to, Harness Connector Inspection The multi-center display unit (middle grade type) should work normally







STEP 9 Check the wiring harness between C-05 (terminal 3) and ignition switch (ACC)

NOTE: Also check joint connector 2 C-03, and intermediate connector C-29 for loose, corroded, or damaged terminals, or terminals pushed back in the connector If or joint connector 2 C-03 or intermediate connector C-29 is damaged, repair or replace the wiring harness Refer to, Harness Connector Inspection

Q: Is the wiring harness between C-05 (terminal 3) and ignition switch (ACC) in good condition?

YES: There is no action to be taken

NO: Repair the wiring harness The multi-center display unit (middle grade type) should work normally

STEP 10 Check the multi-center display unit (middle grade type) power supply circuit [ignition switch (IG1)] Measure the voltage at the multi-center display unit (middle grade type) connector C-05




1. Disconnect the multi-center display unit (middle grade type) connector C-05 and measure at the harness side
2. Turn the ignition switch to "ON" position




3. Measure the voltage between terminal 2 and ground
- The measured value should be approximately 12 volts (battery positive voltage)

Q: Does the measured voltage correspond with this range?

YES: Replace the multi-center display unit (middle grade type) The multi-center display unit (middle grade type) should work normally

NO: Go to Step 11




STEP 11 Check the multi-center display unit (middle grade type) connector C-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector

Q: Is multi-center display unit (middle grade type) connector C-05 in good condition?

YES: Go to Step 12

NO: Repair or replace the connector Refer to, Harness Connector Inspection The multi-center display unit (middle grade type) should work normally











STEP 12 Check the wiring harness between multi-center display unit (middle grade type) connector C-05 (terminal 2) and ignition switch (IG1)

NOTE: Also check joint connector 2 C-03, junction block connector C-211 and C-215 for loose, corroded, or damaged terminals, or terminals pushed back in the connector If joint connector 2 C-03 or junction block connector C-211 or C-215 is damaged, repair or replace the wiring harness Refer to, Harness Connector Inspection

Q: Is the wiring harness between multi-center display unit (middle grade type) connector C-05 (terminal 2) and ignition switch (IG1) in good condition?

YES: The procedure is complete

NO: Repair the wiring harness The multi-center display unit (middle grade type) should work normally
pro multis Credits:Operation CHARM About Operation CHARM