Mitsubishi Outlander GS45X. Manual — part 188

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-749

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.54A-730

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Using scan tool MB991958, read the SRS-ECU
diagnostic trouble code.
Check if DTC is set to the SRS.
Q: Is the DTC set?

YES : Troubleshoot the SRS. (Refer to GROUP 52B,

Diagnosis

P.52B-344

.)

NO : Go to Step 3.

STEP 3. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check if the DTC U0154 is set to the combination meter.
Q: Is the DTC set?

YES : Go to Step 4.
NO : Go to Step 5.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-750

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the occupant classification-ECU.
NO : The trouble can be an intermittent malfunction such

as a poor connection or open circuit in the CAN bus
lines between the occupant classification-ECU and
the ETACS-ECU. (Refer to GROUP 00, How to Cope
with Intermittent Malfunction

P.00-15

)

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such

as a poor connection or open circuit in the CAN bus
lines between the occupant classification-ECU and
the ETACS-ECU. (Refer to GROUP 00, How to Cope
with Intermittent Malfunction

P.00-15

)

DTC U0155: Combination meter CAN timeout

CAUTION

• If DTC U0155 is set to the ETACS-ECU, always

diagnose the CAN bus line.

• Before replacing the ECU, ensure that the

communication circuit is normal.

.

TROUBLE JUDGMENT

If the signal from combination meter cannot be
received, the ETACS-ECU sets DTC U0155.

.

JUDGMENT CRITERIA

After the following statuses continue to be true for 5
seconds, if the communication with the combination
meter cannot be established for 0.6 second or more,
the ETACS-ECU determines that a problem has
occurred.

• No abnormality is present to the network.

• Ignition switch is in the ON position.

• No abnormality is present to the power supply

fuse (IOD fuse), or the odometer value is at 80.5
km (50.0 miles) or more.

• ETACS-ECU system voltage is at 10−16 volts.

.

TROUBLESHOOTING HINTS

• The combination meter may be defective.

• The ETACS-ECU may be defective.

• The CAN bus may be defective.

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-751

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.54A-730

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check if DTC is set to the combination meter.
Q: Is the DTC set?

YES : Troubleshoot the combination meter. (Refer to

P.54A-34

.)

NO : Go to Step 3.

STEP 3. Using scan tool MB991958, read the A/C-ECU
diagnostic trouble code.
Check if the DTC U0155 is set to the A/C-ECU.
Q: Is the DTC set?

YES : Go to Step 4.
NO : Go to Step 5.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-752

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the combination meter.
NO : The trouble can be an intermittent malfunction such

as a poor connection or open circuit in the CAN bus
lines between the combination meter and the
ETACS-ECU. (Refer to GROUP 00, How to Cope with
Intermittent Malfunction

P.00-15

)

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such

as a poor connection or open circuit in the CAN bus
lines between the combination meter and the
ETACS-ECU. (Refer to GROUP 00, How to Cope with
Intermittent Malfunction

P.00-15

)

DTC U0164: A/C-ECU CAN timeout

CAUTION

• If DTC U0164 is set to the ETACS-ECU, always

diagnose the CAN bus line.

• Before replacing the ECU, ensure that the

communication circuit is normal.

.

TROUBLE JUDGMENT

If the signal from A/C-ECU cannot be received, the
ETACS-ECU sets DTC U0164.

.

JUDGMENT CRITERIA

After the following statuses continue to be true for 5
seconds, if the communication with the A/C-ECU
cannot be established for 0.6 second or more, the
ETACS-ECU determines that a problem has
occurred.

• No abnormality is present to the network.

• Ignition switch is in the ON position.

• No abnormality is present to the power supply

fuse (IOD fuse), or the odometer value is at 80.5
km (50.0 miles) or more.

• ETACS-ECU system voltage is at 10−16 volts.

.

TROUBLESHOOTING HINTS

• The A/C-ECU may be defective.

• The ETACS-ECU may be defective.

• The CAN bus may be defective.