Mitsubishi L200. Manual - part 636

 

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Mitsubishi L200. Manual - part 636

 

 

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-215

(4) Erase diagnosis code memory, and then check 

the diagnosis code.

Q: Is diagnosis code B1519 set? 

YES : 

Go to Step 2.

NO : 

The procedure is complete. It is assumed 
that diagnosis code B1519 set as 
connectors C-153, C-154 and C-155 were 
engaged improperly. 

STEP 2. Connector lock check: SRS-ECU 
connectors C-153, C-154 and C-155.

AC801404

AI

Connectors: C-153, C-154, C-155

C-153 (Y)

C-154 (Y)

C-155 (Y)

AC801600AB

SRS-ECU Harness side connector (front view)

Connector 
lockswitch 
terminal

Connector 
lockswitch 
terminal

Connector 
lockswitch 
terminal

(1) Disconnect SRS-ECU connectors C-153, C-154 

and C-155. 

(2) Check the connector lock switch terminal inside 

the harness side connector for improper contact 
or deformation.

Q: Are the SRS-ECU connectors C-153, C-154 and C-

155 in good condition? 
YES : 

Go to Step 3.

NO : 

Replace the SRS-ECU connector C-153, C-
154 and C-155.

STEP 3. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code B1519 set?

YES : 

Replace the SRS-ECU (Refer to 

P.52B-

266

).

NO : 

An intermittent malfunction is suspected 
(Refer to GROUP 00, How to Cope with 
Intermittent Malfunction ). 

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-216

Code No. B1551: SRS warning lamp circuit malfunction (Lamp does not Illuminate).

AC801181

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

SRS Warning Lamp Drive Circuit

IGNITION
SWITCH (IG1)

COMBINATION
METER

SRS-ECU

AD

OPERATION

• Power for the SRS warning lamp is supplied from 

the ignition switch (IG1) circuit.

• The SRS warning lamp illuminates when the igni-

tion switch is turned to the "ON" position and 
goes out after approximately 7 seconds if there is 
not a malfunction in the SRS system.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code will be set if the SRS warning 
lamp driving circuit is short to earth.

PROBABLE CAUSES

• Damaged wiring harnesses of connectors

• Malfunction of the SRS-ECU

• Malfunction of the combination meter

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-217

DIAGNOSIS PROCEDURE

STEP 1. Check the combination meter connector 
C-112.

AC903856AR

Connector: C-112 <LHD>

Harness side 
connector 
(rear view)

AC903868

BD

Connector: C-112 <RHD>

Harness side 
connector 
(rear view)

Q: Is the connector correctly engaged?

YES : 

Go to Step 2.

NO : 

Engage the connector correctly. Then go to 
Step 7.

STEP 2. Voltage measurement at combination 
meter connector C-112.

AC903856AR

Connector: C-112 <LHD>

Harness side 
connector 
(rear view)

AC903868

BD

Connector: C-112 <RHD>

Harness side 
connector 
(rear view)

(1) Disconnect the combination meter connector C-

112.

(2) Connect the negative battery terminal.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between C-112 harness 

side connector terminal 36 and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

TROUBLESHOOTING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-218

STEP 3. Check the harness for open circuit 
between ignition switch and combination meter 
connector C-112 (terminal No.36).

AC903856AR

Connector: C-112 <LHD>

Harness side 
connector 
(rear view)

AC903868

BD

Connector: C-112 <RHD>

Harness side 
connector 
(rear view)

NOTE: 

AC903853

Connector: C-132 <LHD>

AC

C-132 (GR)

AC903865

Connector: C-132 <RHD>

AB

C-132 (GR)

AC509934 AS

Connectors: C-207, C-209 <LHD>

Harness side

C-209

C-207

Harness side

C-209

C-207

Junction block (Front view)

AC509936 AN

Connectors: C-207, C-209 <RHD>

Harness side

C-209

C-207

Harness side

C-209

C-207

Junction block (Front view)

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

Q: Is the check result normal?

YES : 

An intermittent malfunction is suspected 

(Refer to GROUP 00, How to Cope with 
Intermittent Malfunction ).

NO : 

Repair the harness wires between ignition 
switch and the combination meter connector 
C-112 (terminal No.36). Then go to Step 7.

 

 

 

 

 

 

 

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