Mitsubishi Colt Ralliart. Manual — part 424
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-204
Step 2. Voltage measurement at the B-133
ETACS-ECU connector.
(1) Remove the ETACS-ECU, and measure at the
junction block side.
(2) Ignition switch: ON position
(3) Voltage between B-133 ETACS-ECU connector
terminal No.68 and body earth
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 3.
Step 3. Check the wiring harness between B-133
ETACS-ECU connector terminal No.68 to the
ignition switch (IG1).
NOTE:
Prior to the wiring harness inspection, check joint
connector B-22 and junction block connector B-129
and B-131, and repair if necessary.
• Check the power supply line for open circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
).
NO :
Repair the wiring harness.
AC313826AC
B-133 (GR)
Connector: B-133
Harness side
Junction block (Rear view)
AC310507 ET
Connector B-133
(Harness side)
AC313827AB
B-131
B-131
B-129
B-133 (GR)
B-133
B-129
Connectors: B-129, B-131, B-133
Junction block (Rear view)
Harness side
Harness side
Harness side
AC401055
Connector: B-22
AD
Main
Index
Group
TOC
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-205
Step 4. SWS monitor data list.
Check the input signal from the ignition switch.
<Selected item> ETACS ECU
• Ignition switch: ACC → ON
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
).
NO :
Replace the ETACS-ECU.
Inspection Procedure N-3: The driver's door switch signal is not received.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
Item No.
Item name
Normal
condition
Item 30
IG SW(IG1)
from OFF to ON
ETACS-
ECU
DOOR SWITCH
(FRONT: RH)
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Driver's Door Switch Input Circuit
Main
Index
Group
TOC
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-206
COMMENTS ON TROUBLE SYMPTOM
Input signal from the driver's door switch is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.
• Lamp reminder buzzer
• Keyless entry system
• Power window timer
• Ignition key cylinder illumination lamp
• Door-ajar warning lamp
POSSIBLE CAUSES
• Malfunction of the driver's door switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the installation condition.
Check that the front door switch (RH) is installed on
the body correctly.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Correct the installation condition.
Step 2. Connector check: C-29 front door switch
(RH) connector.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
Step 3. Check the front door switch (RH).
Refer to GROUP 42
− Door
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the front door switch (RH).
Step 4. Connector check: B-133 ETACS-ECU
connector.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the defective connector.
AC401057
AF
Connector: C-29
Harness side
AC313826AC
B-133 (GR)
Connector: B-133
Harness side
Junction block (Rear view)
Main
Index
Group
TOC
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-207
Step 5. Check the wiring harness between C-29
front door switch (RH) connector terminal No.1 to
B-133 ETACS-ECU connector terminal No.51.
NOTE:
Prior to the wiring harness inspection, check joint
connector B-23 and B-24, and repair if necessary.
• Check the input line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
Step 6. SWS monitor data list
Check the input signal from the driver's door switch.
<Selected item> ETACS ECU
• Driver's door: close → open
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
).
NO :
Replace the ETACS-ECU.
AC401057
AF
Connector: C-29
Harness side
AC313826AC
B-133 (GR)
Connector: B-133
Harness side
Junction block (Rear view)
AC401056
Connectors: B-23, B-24
AC
B-23
B-24
B-24
B-23
Item No.
Item name
Normal
condition
Item 32
DR DOOR SW
from OFF to
ON
Main
Index
Group
TOC
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