Mitsubishi 380. Manual - part 926

CLOCK DISPLAY

CHASSIS ELECTRICAL

54A-238

CLOCK DISPLAY

GENERAL DESCRIPTION

Clock operation

• The clock has battery power supplied to terminal 

4 from the relay box (fuse 22) via the intermedi-
ate connector (C-29), to memorize clock settings 
and the ground circuit is to terminal 3 of the clock. 
The clock too has accessory power supplied to 
terminal 3 from (fuse 23) in the relay box via inter-
mediate connector (C-29), therefore clock will be 

displayed on "ACC" and "ON" positions. The 
clock illumination is only active when the park or 
headlamps are turned to the "ON" position. 
Power is supplied to terminal 4 of the clock 
(C-06) from the tail lamp relay in the relay box, 
via the (fuse 20) and the junction block.

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

Clock display diagnosis

• Clock display malfunction.

• Clock display not memorizing settings.

• Clock display illumination malfunction.

.

TECHNICAL DESCRIPTION (COMMENT)

The ground circuit, the battery circuit, the ignition 
switch (ACC) circuit or the headlamp switch  circuit is 
suspected to be open or defective.

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• Malfunction of the clock display unit 

• Damaged wiring harness and connectors

.

16DB609A

CONNECTOR:  C-06

C-06

52DB014A

CONNECTOR: C-29

CLOCK DISPLAY

CHASSIS ELECTRICAL

54A-239

DIAGNOSIS 

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check the clock display unit  ground circuit. 
Measure the resistance at the clock display unit  connector 
C-06.
(1) Disconnect the clock display unit  connector C-06 and 

measure at the harness side.

(2) Measure the resistance between terminal 1 and ground.

• The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with 

this range?
YES : Go to Step 4.
NO :  Go to Step 2.

STEP 2. Check the clock display unit  connector C-06 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is the clock display unit  connector C-06 in good 

condition?
YES : Go to Step 3.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

.

16DB609A

CONNECTOR:  C-06

C-06

16DB610A

CONNECTOR C-06 

(HARNESS SIDE)

16DB609A

CONNECTOR:  C-06

C-06

CLOCK DISPLAY

CHASSIS ELECTRICAL

54A-240

STEP 3. Check the wiring harness between clock display 
unit  connector C-06 (terminal 1) and ground.
Q: Is the wiring harness between multi-centre display unit  

connector C-06 (terminal 1) and ground in good 
condition?
YES : There is no action to be taken.
NO :  Repair the wiring harness. The multi-centre display 

unit  should work normally.

STEP 4. Check the clock display unit  power supply circuit 
(battery). Measure the voltage at the multi-centre display 
unit  connector C-06.
(1) Disconnect the multi-centre display unit  connector C-06 

and measure at the harness side.

(2) Measure the voltage between terminal 4 and ground.

• The measured value should be approximately 12 volts 

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES : Go to Step 7.
NO :  Go to Step 5.

STEP 5. Check clock display unit  connector C-06 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is clock display unit  connector C-06 in good condition?

YES : Go to Step 6.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. The 

multi-centre display unit  should work normally.

16DB609A

CONNECTOR:  C-06

C-06

16DB609A

CONNECTOR:  C-06

C-06

16DB611A

CONNECTOR C-06 

(HARNESS SIDE)

16DB609A

CONNECTOR:  C-06

C-06

CLOCK DISPLAY

CHASSIS ELECTRICAL

54A-241

STEP 6. Check the wiring harness between C-06 (terminal 
4) and battery.

NOTE: Also check intermediate connector C-29 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-29 is damaged, repair or 
replace the wiring harness. Refer to GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between C-06 and battery in good 

condition?
YES : There is no action to be taken.
NO :  Repair the wiring harness. The clock display unit  

should work normally.

STEP 7. Check the clock display unit  power supply circuit 
[ignition switch (ACC)]. Measure the voltage at the clock 
display unit  connector C-06.
(1) Disconnect the clock display unit  connector C-06 and 

measure at the harness side.

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

(3) Measure the voltage between terminal 3 and ground by 

backprobing.

• The measured value should be approximately 12 volts 

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES : Go to Step 10.
NO :  Go to Step 8.

16DB609A

CONNECTOR:  C-06

C-06

52DB014A

CONNECTOR: C-29

16DB609A

CONNECTOR:  C-06

C-06

16DB612A

CONNECTOR C-06 

(HARNESS SIDE)