Mitsubishi L200. Manual — part 791

ETACS

CHASSIS ELECTRICAL

54A-531

STEP 3. Check the wiring harness between C-219
ETACS-ECU connector terminal No.74 and the
ignition switch (ACC).

NOTE:

Prior to the wiring harness inspection, check joint
connector C-127, junction block connectors C-207
and C-208, and repair if necessary.

• Check the power supply line for open circuit and

short circuit.

Q: Is the check result normal?

YES :

Refer to Inspection Procedure 2

"Malfunction of the ignition switch power
supply system."

P.54A-22

NO :

Repair the wiring harness.

STEP 4. M.U.T.-III data list
Check the input signals from the ignition switch
(ACC).

• Turn the ignition switch to the "ACC" position.

OK: Normal condition is displayed.

Q: Is the check result normal?

AC509935AG

Connectors: C-207, C-208, C-219 <LHD>

C-219 (GR)

C-207

Harness side

C-219

C-208

C-208

C-207

Harness side

Harness side

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

Item
No.

Item name

Normal condition

29

Ignition switch(ACC) ON

AC903853

Connector: C-127 <LHD>

AE

C-127 (GR)

AC903865

Connector: C-127 <RHD>

AD

C-127 (GR)

AC509936

Connectors: C-207, C-208 <RHD>

C-207

C-208

C-207

Harness side

Harness side

C-208

AB

Junction block
(Front view)

ETACS

CHASSIS ELECTRICAL

54A-532

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 ).

NO :

Replace the ETACS-ECU and register the
ID codes (Refer to

P.54A-39

).

Inspection Procedure C-3: The ignition switch (IG1) 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 ignition switch (IG1) is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.

• Lamp reminder function

• Turn-signal lamp

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Ignition Switch (IG1) Input Circuit

ETACS-ECU

IGNITION
SWITCH (IG1)

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver

ETACS

CHASSIS ELECTRICAL

54A-533

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-219 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

STEP 2. Voltage measurement at the C-219
ETACS-ECU connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Voltage between C-219 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.

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

AC310507

(Harness side)

Connector: C-219

JI

ETACS

CHASSIS ELECTRICAL

54A-534

STEP 3. Check the wiring harness between C-219
ETACS-ECU connector terminal No.68 and the
ignition switch (IG1).

NOTE:

Prior to the wiring harness inspection, check joint
connector C-132, junction block connectors C-207
and C-209, and repair if necessary.

• Check the power supply line for open circuit and

short circuit.

Q: Is the check result normal?

YES :

Refer to Inspection Procedure 2

"Malfunction of the ignition switch power
supply system."

P.54A-22

NO :

Repair the wiring harness.

STEP 4. M.U.T.-III data list
Check the input signal from the ignition switch (IG1).

• Turn the ignition switch to the "ON" position.

OK: Normal condition is displayed.

Q: Is the check result normal?

AC509935AH

Connectors: C-207, C-209, C-219 <LHD>

C-219 (GR)

C-207

Harness side

C-219

C-209

C-209

C-207

Harness side

Harness side

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
(Rear view)

Item
No.

Item name

Normal condition

30

Ignition switch(IG1)

ON

AC903853

Connector: C-132 <LHD>

AC

C-132 (GR)

AC903865

Connector: C-132 <RHD>

AB

C-132 (GR)

AC509936 AN

Connectors: C-207, C-209 <RHD>

Harness side

C-209

C-207

Harness side

C-209

C-207

Junction block (Front view)