Mitsubishi L200. Manual - part 754

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-383

SPECIAL TOOLS

M1544000600652

TROUBLESHOOTING

STANDARD FLOW OF DIAGNOSTIC 
TROUBLESHOOTING

M1544004800551

Refer to GROUP 00 

− Contents of troubleshooting .

TROUBLE SYMPTOM CHART

M1544004901863

Tool

Number

Name

Use

MB991223

a. MB991219
b. MB991220
c. MB991221
d. MB991222

Harness set

a. Check harness
b. LED harness
c. LED harness 

adapter

d. Probe

Continuity check and voltage 
measurement at harness wire or 
connector

a. For checking connector pin 

contact pressure

b. For checking power supply circuit
c. For checking power supply circuit
d. For connecting a locally sourced 

tester

MB992006

Extra fine probe

Continuity check and voltage 
measurement at harness wire or 
connector

MB991223

a

d

c

b

DO NOT USE

BA

MB992006

Inspection 
Procedure 
No.

Trouble symptom

Reference 
page

1

Steering wheel audio remote control switch does not 
function.

<Vehicle with radio 
and CD player>

P.54A-384

Steering wheel audio remote control switch does not 
function.

<Vehicle with MMCS>

P.54A-388

2

Steering wheel audio remote control switch illumination does not come on.

P.54A-392

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-384

SYMPTOM PROCEDURES

Inspection Procedure 1: Steering wheel audio remote control switch does not function. <Vehicle with 
radio and CD player>

TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit to the steering wheel audio 
remote control switch, the steering wheel audio 

remote control switch, the radio and CD player, or 
the clock spring may be defective.

Steering Wheel Audio Remote Control Switch Circuit

RADIO AND CD PLAYER

CLOCK 
SPRING

STEERING 
WHEEL 
AUDIO 
REMOTE 
CONTROL 
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 : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-385

TROUBLESHOOTING HINTS

• Malfunction of steering wheel audio remote con-

trol switch

• Malfunctions of radio and CD player

• Malfunction of the clock spring

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-311 steering wheel 
audio remote control switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

STEP 2. Check the steering wheel audio remote 
control switch.
Check the continuity of the steering wheel audio 
remote control switch. (Refer to 

P.54A-397

).

Q: Is the hood switch in good condition?

YES : 

Go to Step 3.

NO : 

Replace the steering wheel audio remote 
control switch.

STEP 3. Connector check: C-310 and C-306 clock 
spring connector

Q: Is the hood switch in good condition?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the clock spring.
Check whether the clock spring is in good condition 
(Refer to GROUP 52B 

− Air bag module and clock 

spring ).

• Check if continuity exists between C-310 clock 

spring connector terminal No.5 and C-306 clock 
spring connector terminal No.2.

• Check if continuity exists between C-310 clock 

spring connector terminal No.4 and C-306 clock 
spring connector terminal No.3.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the clock spring.

AC903858 AF

Connector: C-311 <LHD>

Harness side

C-311 (R)

AC903869 AF

Connector: C-311 <RHD>

Harness side

C-311 (R)

AC903858AG

Connectors: C-306, C-310 <LHD>

Harness side

C-306 (B)

C-310

C-306

Harness side

C-310

AC903869AG

Connectors: C-306, C-310 <RHD>

Harness side

C-306 (B)

C-310

C-306

Harness side

C-310

STEERING WHEEL AUDIO REMOTE CONTROL SWITCH

CHASSIS ELECTRICAL

54A-386

STEP 5. Connector check: C-126 radio and CD 
player connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

STEP 6. Check the wiring harness between C-126 
radio and CD player connector terminal No.31, 42 
and C-306 clock spring connector terminal No.2, 
3.

• Check the communication lines for open and 

short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

AC903856BT

Harness side

Connector: C-126 <LHD>

AC903868

CP

Connector: C-126 <RHD>

Harness side

AC903856BT

Harness side

Connector: C-126 <LHD>

AC903868

CP

Connector: C-126 <RHD>

Harness side

AC903858AH

Connector: C-306 <LHD>

Harness side

C-306 (B)

AC903869AH

Connector: C-306 <RHD>

Harness side

C-306 (B)