Mitsubishi Grandis. Manual — part 798

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-33

STEP 6. Measure the voltage at stop lamp switch
connector C-127.

(1) Disconnect stop lamp switch connector C-127.

(2) Measure the voltage between stop lamp switch

connector C-127 terminal No.2 and earth.

OK: System voltage

(3) Connect stop lamp switch connector C-127.

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Go to Step 7.

STEP 7. Connectors check: C-127 stop lamp
switch connector, C-125 intermediate connector

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair or replace the damaged
components. Then go to Step 23.

AC311916

Connector: C-127

AB

C-127

AC305712AE

C-127 harness
connector:
component side

AC311916

Connector: C-127

AB

C-127

AC311915AB

Connector: C-125

C-125

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-34

STEP 8. Check the harness between stop lamp
switch connector C-127 terminal No.2 and fuse
No.11 at the relay box in engine compartment for
damage.

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Repair the damaged harness wire. Then go
to Step 23.

STEP 9. Check the fuse No.11 at the relay box in
engine compartment.

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Check the stop lamp system harness and
replace the fuse. Then go to Step 23.

STEP 10. Check the stop lamp switch.
(1) Remove the stop lamp switch (Refer to GROUP

35A, Brake Pedal

P.35A-12

).

(2) Connect an ohmmeter to the stop lamp switch

between terminals 1 and 2.

(3) Check for continuity between the terminals when

the plunger of the stop lamp switch is pushed in
and when it is released.

OK: The stop lamp switch is operating
properly if the circuit is open between
terminals 1 and 2 when the plunger is
pushed in to a depth of within 4.0 mm
from the outer case edge surface, and if
the resistance value is less than 2 ohms
between terminals 1 and 2 when it is
released.

Q: Is the check result normal?

YES :

Install the stop lamp switch (Refer to

GROUP 35A, Brake Pedal

P.35A-12

). Then

go to Step 11.

NO :

Replace the stop lamp switch (Refer to
GROUP 35A, Brake Pedal

P.35A-12

). Then

go to Step 23.

AC311916

Connector: C-127

AB

C-127

AC311951AB

Fuse No.11
(housing colour: blue)

AC311951AB

Fuse No.11
(housing colour: blue)

AC311942 AB

C-127 Stop lamp
switch connector

AC311961

Continuity

No continuity

4.0 mm

AB

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-35

STEP 11. Connectors check: C-127 stop lamp
switch connector, C-18 intermediate connector

Q: Is the check result normal?

YES :

Go to Step 12.

NO :

Repair or replace the damaged
components. Then go to Step 23.

STEP 12. Check the harness between stop lamp
switch connector C-127 terminal No.1 and
intermediate connector C-18 terminal No.4.

Q: Is the check result normal?

YES :

Go to Step 13.

NO :

Repair the damaged harness wire. Then go
to Step 23.

STEP 13. MUT-III data list

Item 05: Stop lamp switch (Refer to data list
reference table

P.17-50

).

Q: Is the check result normal?

YES :

Go to Step 22.

NO :

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T> (Refer to GROUP
13A, Engine-ECU and Engine-A/T-ECU

P.13A-399

). Then go to Step 23 .

STEP 14. MUT-III data list

Item 06: Brake switch (Refer to data list reference
table

P.17-50

).

Q: Is the check result normal?

YES :

Go to Step 22.

NO :

Go to Step 15.

AC311916

Connector: C-127

AB

C-127

AC311915

Connector: C-18

C-18

AC

AC311916

Connector: C-127

AB

C-127

AC311915

Connector: C-18

C-18

AC

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-36

STEP 15. Measure the voltage at engine-ECU
connector C-111 <M/T> or engine-A/T-ECU
connector C-111 <A/T>.
(1) Turn the ignition switch to the "ON" position.

(2) Measure the voltage between engine-ECU

connector C-111 <M/T> terminal No.54 or
engine-A/T-ECU connector C-111 <A/T> terminal
No.54 and earth.

OK:

Brake pedal depressed: System voltage
Brake pedal not depressed: 1 V or less

(3) Turn the ignition switch to the "LOCK" (OFF)

position.

Q: Is the check result normal?

YES :

Go to Step 21.

NO :

Go to Step 16.

STEP 16. Check the stop lamp switch.
(1) Remove the stop lamp switch (Refer to GROUP

35A, Brake Pedal

P.35A-12

).

(2) Connect an ohmmeter to the stop lamp switch

between terminals 3 and 4.

(3) Check for continuity between the terminals when

the plunger of the stop lamp switch is pushed in
and when it is released.

OK: The stop lamp switch is operating
properly if the circuit is open between
terminals 3 and 4 when the plunger is
released, and if resistance value is less
than 2 ohms between terminals 3 and 4
when the plunger is pushed in to a depth
of within 4.5 mm from the outer case
edge surface.

Q: Is the check result normal?

YES :

Install the stop lamp switch (Refer to

GROUP 35A, Brake Pedal

P.35A-12

). Then

go to Step 17.

NO :

Replace the stop lamp switch (Refer to
GROUP 35A, Brake Pedal

P.35A-12

). Then

go to Step 23.

AC311909AB

C-111 (GR)

Connector: C-111

AC304692AE

C-111 harness
connector:
harness side

AC311943AB

C-127 Stop lamp
switch connector

AC311961

Continuity

No continuity

4.5 mm

AC