Mitsubishi Grandis. Manual — part 74

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-293

NOTE:

AC310631 AD

Connector: C-16 <RHD>

AC310631AL

Connector: C-31 <RHD>

AC310619

Connectors: C-203, C-210 <RHD>

AP

Junction block side

Junction block (Front view)

C-210

C-203

Harness side

C-210

C-203

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC310220

AC310220

Connector: G-21 <RHD>

AG

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-294

<RH drive vehicles> Prior to the wiring harness
inspection, check intermediate connector C-16
<tail/stop lamp (LH) and licence plate lamp>, C-125
<tail/stop lamp and licence plate lamp>, G-14
<licence plate lamp>, G-21 <tail/stop lamp (LH)>,
joint connector C-31 <tail/stop lamp (RH)>, junction
block connector C-203 <tail/stop lamp (LH)> and
C-210 <tail/stop lamp (LH)>, and repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair the wiring harness.

Step 8. Retest the system.

Check that the tail lamps, the position lamps and the
licence plate lamps illuminate normally.

Q: Is the check result normal?

The lamps illuminate normally at both high and low
beams. :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

When the tail/stop lamps do not illuminate :

Replace the tail/stop lamp socket assembly.

When the position lamps do not illuminate :

Replace the position lamp socket.

When the licence plate lamps do not illuminate :

Replace the licence plate lamp socket.

Inspection Procedure M-7: The headlamp(s) do not illuminate.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

FRONT-ECU

HEADLAMP

(HI: LH)

HEADLAMP

(LO: LH)

HEADLAMP

(LO: RH)

HEADLAMP

(HI: RH)

HEADLAMP
RELAY: HI

HEADLAMP
RELAY: LO

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

RELAY BOX

Headlamps Circuit

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-295

COMMENTS ON TROUBLE SYMPTOM

If any of the headlamps or the high-beam indicator
does not illuminate, the wiring harness connector(s),
the bulb or the fuse may be defective or burned out.

POSSIBLE CAUSES

• Malfunction of the headlamp bulbs

• Malfunction of the high-beam indicator bulb

• Damaged harness wires and connectors

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-296

DIAGNOSIS PROCEDURE

Step 1. Connector check: A-35 headlamp (HI: RH)
connector or A-21 headlamp (HI: LH) connector,
A-38 headlamp (LO: RH) connector or A-18
headlamp (LO: LH) connector