Mitsubishi Colt Ralliart. Manual — part 368

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-216

INSPECTION PROCEDURE N-9: The hazard warning lamp switch signal is not received.

CAUTION

Whenever the ECU is replaced, ensure that the
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

Input signal from the hazard warning lamp switch is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.

POSSIBLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: B-09 hazard warning
lamp switch connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

Hazard Warning Lamp Switch Input Circuit

ETACS-
ECU

HAZARD
WARNING
LAMP SWITCH

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

AC401055

AJ

Connector: B-09

Harness side

Main

Index

Group

TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-217

Step 2. Check the hazard warning lamp switch.
Refer to GROUP 54A

− Hazard warning lamp switch

P.54A-87

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the hazard warning lamp switch.

Step 3. Resistance measurement at the B-09
hazard warning lamp switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Resistance between B-09 hazard warning lamp

switch connector terminal No.2 and body earth

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

Step 4. Check the wiring harness between B-09
hazard warning lamp switch connector terminal
No.2 to the body earth.

NOTE: Prior to the wiring harness inspection, check
joint connector B-25, and repair if necessary.

• Check the input 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

Malfunction

P.00-13

).

NO :

Repair the wiring harness.

Step 5. Connector check: B-133 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the defective connector.

AC401055

AJ

Connector: B-09

Harness side

AC310506DR

Connector B-09
(Harness side)

AC401056

Connectors: B-09, B-25

AE

B-25

B-25

B-25

B-09

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) NOT USING SWS MONITOR

54B-218

Step 6. Check the wiring harness between B-133
ETACS-ECU connector terminal No.71 to B-09
hazard warning lamp switch connector terminal
No.1.

• Check the input line for open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

Step 7. Retest the system.
Check that the hazard warning lamp switch signal is
received normally.

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

Malfunction

P.00-13

).

NO :

Replace the ETACS-ECU.

AC401055

AJ

Connector: B-09

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) NOT USING SWS MONITOR

54B-219

INSPECTION PROCEDURE N-10: All the door switch signals are not received.

CAUTION

Whenever the ECU is replaced, ensure that the
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

Input signals from all the door switches are used to
operate the functions below. If the signal(s) are
abnormal, these functions will not work normally.

• Door-ajar warning buzzer

• Keyless entry system

• Room lamp

• Door-ajar warning lamp

POSSIBLE CAUSES

• Malfunction of the door switches

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DOOR SWITCH
(FRONT: RH)

DOOR SWITCH
(REAR: RH)

DOOR SWITCH
(REAR: LH)

DOOR SWITCH
(FRONT: LH)

ETACS-ECU

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

TAILGATE
SWITCH

Door Switches Input Circuit

Main

Index

Group

TOC