Mitsubishi Grandis. Manual — part 794

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-17

Q: Is the check result normal?

YES :

Go to Step 13.

NO :

Repair or replace the faulty connector, and
install the air bag module (driver’s side)
(Refer to GROUP 52B, Driver’s, Front
Passenger’s Air Bag Module(s) and Clock
Spring

P.52B-225

). Then go to Step 18.

AC311914AE

C-17

Connector: C-17
<L.H. drive vehicles>

AC311915AF

C-17

Connector: C-17
<R.H. drive vehicles>

AC311284AD

Connector: C-114

<L.H. drive vehicles>

<R.H. drive vehicles>

C-114 (GR)

C-114 (GR)

AC311366

C-304

C-305

C-310

C-311

Connectors: C-304, C-305, C-310, C-311

<L.H. drive vehicles>

<R.H. drive vehicles>

C-311

C-310 (B)

C-310 (B)

C-311

AB

Clock
spring

Clock
spring

C-305 (Y)

C-304 (B)

C-305 (Y)

C-304 (B)

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-18

STEP 13. Check the harness between
engine-ECU connector C-114 <M/T> terminal
No.146 or engine-A/T-ECU connector C-114
<A/T> terminal No.146 and the auto-cruise
control switch connector C-305 terminal No.3.

Q: Is the check result normal?

AC311284AD

Connector: C-114

<L.H. drive vehicles>

<R.H. drive vehicles>

C-114 (GR)

C-114 (GR)

AC311366

Connector: C-305

<L.H. drive vehicles>

<R.H. drive vehicles>

C-305 (Y)

C-305 (Y)

AC

Clock
spring

Clock
spring

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-19

YES :

Go to Step 14.

NO :

Repair the damaged harness wire, and
install the air bag module (driver’s side)
(Refer to GROUP 52B, Driver’s, Front
Passenger’s Air Bag Module(s) and Clock
Spring

P.52B-225

). Then go to Step 18.

STEP 14. Check the clock spring.

Refer to GROUP 52B, Driver’s, Front Passenger’s
Air Bag Module(s) and Clock Spring

P.52B-225

.

Q: Is the check result normal?

YES :

It can be assumed that this malfunction is

intermittent, and install the air bag module
(driver’s side) (Refer to GROUP 52B,
Driver’s, Front Passenger’s Air Bag
Module(s) and Clock Spring

P.52B-225

).

Then go to Step 18.

NO :

Replace the clock spring and install the air
bag module (driver’s side) (Refer to GROUP
52B, Driver’s, Front Passenger’s Air Bag
Module(s) and Clock Spring

P.52B-225

).

Then go to Step 18.

STEP 15. Connector check: C-305 auto-cruise
control switch connector

Q: Is the check result normal?

YES :

Go to Step 16.

NO :

Repair or replace the faulty connector, and
install the air bag module (driver’s side)
(Refer to GROUP 52B, Driver’s, Front
Passenger’s Air Bag Module(s) and Clock
Spring

P.52B-225

). Then go to Step 18.

STEP 16. Check the auto-cruise control switch.

Refer to

P.17-55

.

Q: Is the check result normal?

YES :

Install the air bag module (driver’s side)

(Refer to GROUP 52B, Driver’s, Front
Passenger’s Air Bag Module(s) and Clock
Spring

P.52B-225

). Then go to Step 17.

NO :

Replace the auto-cruise control switch
(Refer to

P.17-56

), and install the air bag

module (driver’s side) (Refer to GROUP
52B, Driver’s, Front Passenger’s Air Bag
Module(s) and Clock Spring

P.52B-225

).

Then go to Step 18.

AC311366

Connector: C-305

<L.H. drive vehicles>

<R.H. drive vehicles>

C-305 (Y)

C-305 (Y)

AC

Clock
spring

Clock
spring

AUTO-CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-20

STEP 17. Check the MUT-III diagnosis code
No.15.

Q: Is the MUT-III diagnosis code No.15 output?

YES :

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 18 .

NO :

It can be assumed that this malfunction is
intermittent.

STEP 18. Check the MUT-III diagnosis code
No.15.

Q: Is the MUT-III diagnosis code No.15 output?

YES :

Return to Step 1.

NO :

The procedure is complete.

Code No.21 Cancel Latch Signal System

DIAGNOSIS CODE SET CONDITIONS

The engine-ECU <M/T> or engine-A/T-ECU <A/T>
communicates cancellation retention information
between the two microprocessors. This diagnosis
code is set when cancellation retention information
contains inconsistency.

POSSIBLE CAUSES

• Malfunction of the engine-ECU <M/T>.

• Malfunction of the engine-A/T-ECU <A/T>.

DIAGNOSIS

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 check that

diagnosis code 21 is not set.