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Home >> Mitsubishi >> 1999 >> Galant ES V6-3.0L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> N - Charts >> Inspection Procedure N-7

Inspection Procedure N-7

N-7 The driver's or front passenger's door switch is not sent to the ETACS-ECU.
The door switch signals are not sent to the ETACS-ECU.

Driver's Front Passenger's Or Rear Door Switch Input Circuit <1999 Models>:




Driver's, Front Passenger's or Rear Door Switch Input Circuit <2000 Driver's Front Passenger's Or Rear Door Switch Input Circuit <2000 Models>:




Connectors:






CIRCUIT OPERATION
The ETACS-ECU operates various functions according to the input signal from the driver's, front passenger's or rear door switch.

TECHNICAL DESCRIPTION (COMMENT)


The driver's or front passenger 5 door switch is used to operate the following devices or functions. If the signal fails, these devices will not work normally.
- Ignition key reminder tone alarm function (driver's door switch only)
- Light reminder tone alarm function (driver's door switch only)
- Forgotten key prevention function
- Power window timer function
- Headlight automatic shutdown function (driver's door switch only)
- Theft-alarm system


The door switches are used to operate the following devices or functions. If the signal fails, these devices will not work normally.
- Key less entry system
- Dome light
- Theft-alarm system

TROUBLESHOOTING HINTS
- Malfunction of the driver's, front passenger's or rear door switch
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS
Required Special Tools:
MB991223: Test Harness Set
MB991502: Scan Tool (MUT-II)
MB991529: Diagnostic Trouble Code Check Harness




1999 Models:




2000 Models:




STEP 1. Check the door switch.
If the door switch is damaged, replace it.

The driver's, front passenger's and rear door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

<1999 models>
If the driver's door switch is not defective, go to Step 2.
If the front passenger's door switch is not defective, go to Step 7.
If the rear door switch (LH) is not defective, go to Step 12.
If the rear door switch (RH) is not defective, go to Step 17.

<2000 models>
If the driver's door switch is not defective, go to Step 22.
If the front passenger's door switch is not defective, go to Step 25.
If the rear door switch (LH) is not defective, go to Step 28.
If the rear door switch (RH) is not defective, go to Step 31.




STEP 2. Check the driver's door switch ground circuit at the driver's door switch connector C-21.
1. Disconnect the driver's door switch connector D-21 and measure at the harness side.
2. Resistance between terminal 3 and ground.
- Should be less than 2 Ohms.
If open circuit, go to Step 3.
If less than 2 Ohms, go to Step 5.




STEP 3. Check the driver's door switch connector C-21 for damage.
If the driver's door switch connector D-21 is damaged, repair or replace it. Refer to Harness Connector Inspection.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connector is in good condition, go to Step 4.




STEP 4. Check the harness wire between driver's door switch connector D-21 and ground.
If the harness wire between driver's door switch connector D-21 and ground is damaged, repair it.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.







STEP 5. Check the driver's door switch connector C-21 and ETACS-ECU connector C-86 for damage.

If the driver's door switch connector D-21 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connectors are in good condition, go to Step 6.










STEP 6. Check the harness wires between driver's door switch connector D-25 and ETACS-ECU connector C-82.

NOTE: After checking intermediate connector C-67 and junction block connector C-87, check the wires. If intermediate connector C-67 and junction block connector C-87 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between driver's door switch connector D-21 and ETACS-ECU connector C-86 are damaged, repair them.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 7. Check the front passenger's door switch ground circuit at the front passenger's door switch connector D-08.
1. Disconnect the front passenger's door switch connector D-08 and measure at the harness side.
2. Resistance between terminal 3 and ground.
- Should be less than 2 Ohms.
If open circuit, go to Step 8.
If less than 2 Ohms, go to Step 10.




STEP 8. Check the front passenger's door switch connector D-08 for damage.
If the front passenger's door switch connector D-08 is damaged, repair or replace it. Refer to Harness Connector Inspection.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connector is in good condition, go to Step 9.




STEP 9. Check the harness wire between front passenger's door switch connector D-08 and ground.
If the harness wire between front passenger's door switch connector D-21 and ground is damaged, repair it.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.










STEP 10. Check the front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86 for damage.
If the front passenger's door switch connector D-08 and ETACS-ECU connector C-82 and C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connectors are in good condition, go to Step 11.










STEP 11. Check the harness wires between front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86.

NOTE: After checking intermediate connectors C-69 and C-71 and junction block connector C-78, check the wires. If intermediate connectors C-69 and C-71 and junction block connector C-78 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86 are damaged, repair them.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 12. Check the rear door switch (LH) ground circuit at the rear door switch (LH) connector F-14.
1. Disconnect the rear door switch (LH) connector F-14 and measure at the harness side.
2. Resistance between terminal 3 and ground.
- Should be less than 2 Ohms.
If open circuit, go to Step 13.
If less than 2 Ohms, go to Step 15.




STEP 13. Check the rear door switch (LH) connector F-14 for damage.
If the rear door switch (LH) connector F-14 is damaged, repair or replace it. Refer to Harness Connector Inspection.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connector is in good condition, go to Step 14.




STEP 14. Check the harness wire between rear door switch (LH) connector F-14 and ground.
If the harness wire between rear door switch (LH) connector F-14 and ground is damaged, repair it.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the Technical Description (comment)," should work normally.







STEP 15. Check the rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 for damage.
If the rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connectors are in good condition, go to Step 16.










STEP 16. Check the harness wires between rear door switch (LH) connector F-14 and ETACS-ECU connector C-86.

NOTE: After checking intermediate connector C-67 and junction block connector C-87, check the wires. If intermediate connector C-67 and junction block connector C-87 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 are damaged, repair them.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 17. Check the rear door switch (RH) ground circuit at the rear door switch (RH) connector F-08.
1. Disconnect the rear door switch (RH) connector F-08 and measure at the harness side.
2. Resistance between terminal 3 and ground.
- Should be less than 2 Ohms.
If open circuit, go to Step 18.
If less than 2 Ohms, go to Step 20.




STEP 18. Check the rear door switch (RH) connector F-08 for damage.
If the rear door switch (RH) connector F-08 is damaged, repair or replace it. Refer to Harness Connector Inspection.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connector is in good condition, go to Step 19.




STEP 19. Check the harness wire between rear door switch (RH) connector F-08 and ground.
If the harness wire between rear door switch (RH) connector F-08 and ground is damaged, repair it.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.







STEP 20. Check the rear door switch (RH) connector F-08 and ETACS-ECU connector C-86 for damage.
If the rear door switch (RH) connector F-08 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the connectors are in good condition, go to Step 21.













STEP 21. Check the harness wires between rear door switch (RH) connector F-08 and ETACS-ECU connector C-86.

NOTE: After checking intermediate connector C-71 and junction block connector C- 78, check the wires. If intermediate connector C-71 and junction block connector C-78 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between rear door switch (RH) connector F-08 and ETACS-ECU connector C-86 are damaged, repair them.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 22. Check the driver's door switch condition.

NOTE: The driver's door switch is grounded to the vehicle body via uts mounting screw.

Turn up the cup, and measure the resistance between the lower metal portion and the ground.
- Should be less than 2 Ohms.

If open circuit, check the installation condition and correct it as necessary.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If less than 2 Ohms, go to Step 23.







STEP 23. Check the driver's door switch connector D-21 and ETACS-ECU connector C-86 for damage.

If the driver's door switch connector D-21 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness connectors are in good condition, go to Step 24.







STEP 24. Check the harness wires between driver's door switch connector D-21 and ETACS-ECU connector C-86.

NOTE: After checking intermediate connector C-87, check the wires. If intermediate connector C-87 is damaged, repair or replace it Refer to Harness Connector Inspection.

If the harness wires between driver's door switch connector D-21 and ETACS-ECU connector C-86 are damaged, repair them.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The driver's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 25. Check the front passenger's door switch condition.

NOTE: The front passenger's door switch is grounded to the vehicle body via uts mounting screw.

Turn up the cup, and measure the resistance between the lower metal portion and the ground.
- Should be less than 2 Ohms.

If open circuit, check the installation condition and correct it as necessary.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If less than 2 Ohms, go to Step 26.










STEP 26. Check the front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86 for damage.

If the front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness connectors are in good condition, go to Step 27.










STEP 27. Check the harness wires between front passenger's door switch connector D-08 and ETACS-ECU connectors C-62 and C-86.

NOTE: After checking intermediate connector C-71 and junction block connector C-78, check the wires. If intermediate connector C-71 and junction block connector C-78 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between front passenger's door switch connector D-08 and ETACS-ECU connectors C-82 and C-86 are damaged, repair them.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The front passenger's door switch input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 28. Check the rear door switch (LH) condition.

NOTE: The rear door switch (LH) is grounded to the vehicle body via uts mounting screw.

Turn up the cup, and measure the resistance between the lower metal portion and the ground.
- Should be less than 2 Ohms.

If open circuit, check the installation condition and correct it as necessary.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If less than 2 Ohms, go to Step 29.







STEP 29. Check the rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 for damage.

If the rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness connectors are in good condition, go to Step 30.







STEP 30. Check the harness wires between rear door switch (LH) connector F-14 and ETACS-ECU connector C-86.

NOTE: After checking junction block connector C-87, check the wires. If junction block connector C-87 is damaged, repair or replace it. Refer to Harness Connector Inspection.

If the harness wires between rear door switch (LH) connector F-14 and ETACS-ECU connector C-86 are damaged, repair them.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The rear door switch (LH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.




STEP 31. Check the rear door switch (RH) condition.

NOTE: The rear door switch (RH) is grounded to the vehicle body via its mounting screw.

Turn up the cup, and measure the resistance between the lower metal portion and the ground.
- Should be less than 2 Ohms.

If open circuit, check the installation condition and correct it as necessary.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If less than 2 Ohms, go to Step 32.







STEP 32. Check the rear door switch (RH) connector F-08 and ETACS-ECU connector C-86 for damage.

If the rear door switch (RH) connector F-14 and ETACS-ECU connector C-86 are damaged, repair or replace them. Refer to Harness Connector Inspection.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness connectors are in good condition, go to Step 33.













STEP 33. Check the harness wires between rear door switch (RH) connector F-08 and ETACS-ECU connector C-86.

NOTE: After checking intermediate connector C-71 and junction block connector C-78, check the wires. If intermediate connector C-71 and junction block connector C-78 are damaged, repair or replace them. Refer to Harness Connector Inspection.

If the harness wires between rear door switch (RH) connector F-08 and ETACS-ECU connector C-86 are damaged, repair them.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.

If the harness wires are in good condition, replace the ETACS-ECU.

The rear door switch (RH) input signal should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
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