Mitsubishi L200. Manual — part 682

HEADLAMP

CHASSIS ELECTRICAL

54A-95

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

M1540104200037

Refer to GROUP 00

− Contents of troubleshooting .

DIAGNOSTIC FUNCTION

M1540104300045

HOW TO READ DIAGNOSIS CODE

Use the M.U.T.-III to read diagnosis code (Refer to
GROUP 00

− Diagnosis Function ).

HOW TO ERASE DIAGNOSIS CODE

Use the M.U.T.-III to erasing diagnosis code (Refer to
GROUP 00

− Diagnosis Function ).

DIAGNOSIS CODE CHART

M1540101400496

CAUTION

On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnosis
code(s) associated with other system may be set. On completion, confirm all systems for diagnosis
code(s). If diagnosis code(s) are set, erase them all.
ETACS-ECU

LIN

MB992006

Extra fine probe

Continuity check and voltage
measurement at harness wire or
connector

Tool

Number

Name

Use

MB992006

Code No.

Diagnostic item

Reference page

B1707

Flasher timer

Detection of turn-signal lamp (open circuit)

P.54A-96

Code No.

Diagnostic item

Reference page

L0432

RLS RS adaptation error

P.54A-108

L0434

RLS rain sensor error

P.54A-108

L0436

RLS light sensor error

HEADLAMP

CHASSIS ELECTRICAL

54A-96

DIAGNOSIS CODE PROCEDURES

Code No.B1707: Detection of turn-signal lamp (open circuit)

COMMENTS ON TROUBLE SYMPTOM
When the turn-signal lamp bulb is blown, or connec-
tor(s) or wiring harness between the ETACS-ECU,
the turn-signal lamp which does not illuminate and
body earth is defective, the ETACS-ECU set diagno-
sis code No.B1707.

PROBABLE CAUSES

• Malfunction of the turn-signal lamp bulb

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

(TURN:RH)

(TURN:LH)

(RH)

(LH)

(RH)

(LH)

Turn-Signal Lamp Circuit

J/B SIDE

ETACS-ECU

SIDE TURN-
SIGNAL LAMP

FRONT TURN-
SIGNAL LAMP

REAR COMBINATION
LAMP

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

NOTE

: VEHICLES WITH REAR BODY
: VEHICLES WITHOUT REAR BODY
: LHD
: RHD

HEADLAMP

CHASSIS ELECTRICAL

54A-97

DIAGNOSIS PROCEDURE

STEP 1. Confirm which turn-signal lamp is
defective.

Q: Which turn-signal lamp fails to illuminate

correctly?
Front turn-signal lamp :

Go to Step 2.

Side turn-signal lamp :

Go to Step 9.

Rear turn-signal lamp :

Go to Step 16.

STEP 2. Connector check: A-118 front turn-signal
lamp (LH) connector or A-127 front turn-signal
lamp (RH) connector.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector. Go to Step
23.

STEP 3. Check the bulb(s) of the front turn-signal
lamps.
Check the bulb(s) of the defective lamp.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the bulb(s) of the defective lamp.
Go to Step 23.

STEP 4. Resistance measurement at the A-118
front turn-signal lamp (LH) connector or A-127
front turn-signal lamp (RH) connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Resistance measurement between the defective

lamp connector terminal and body earth.

• Resistance between A-118 front turn-signal

lamp (LH) connector terminal No.1 and body
earth

• Resistance between A-127 front turn-signal

lamp (RH) connector terminal No.1 and body
earth

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.

AC903898

AD

Harness side

Connector: A-118

A-118 (BR)

AC903897

AC

Connector: A-127

Harness side

A-127 (BR)

AC903898

AD

Harness side

Connector: A-118

A-118 (BR)

AC903897

AC

Connector: A-127

Harness side

A-127 (BR)

AC310506

Connectors A-118, A-127

HW

(Harness side)

HEADLAMP

CHASSIS ELECTRICAL

54A-98

STEP 5. Check the wiring harness from A-118
front turn-signal lamp (LH) connector terminal
No.1 or A-127 front turn-signal lamp (RH)
connector terminal No.1 to body earth.

• Check the earth wires 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 ). Go to Step 23.

NO :

Repair the wiring harness. Go to Step 23.

STEP 6. Connector check: C-218 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the defective connector. Go to Step
23.

AC903898

AD

Harness side

Connector: A-118

A-118 (BR)

AC903897

AC

Connector: A-127

Harness side

A-127 (BR)

AC509934

Connector: C-218 <LHD>

AJ

Junction

block

Junction block side

AC509943

Connector: C-218 <RHD>

AC

Junction block

(Rear view)

Junction block side