Mitsubishi Outlander XL. Manual — part 934

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: Vehicles 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

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."

(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 54D,

Diagnosis P.54D-17).

STEP 2. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code
Check again if the DTC is set to the ETACS-ECU.

Q:Is the DTC set?

YES:

Diagnose the ETACS-ECU (Refer to GROUP 54Ad,

Diagnosis P.54Ad-8).

NO:

Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the SRS-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 SRS-ECU.

NO:

There is an intermittent malfunction such as poor

engaged connector(s) or open circuit (Refer to GROUP 00,

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-267

SRS AIR BAG DIAGNOSIS

How to use Troubleshooting/inspection Service Points P.
00-15).

DTC U0154: Occupant Classification-ECU CAN Timeout

M15204001004USA0000010000

｠

If the DTC U0154 is set, be sure to diagnose the
CAN main bus line.

｠

When replacing the ECU, always check that the
communication circuit is normal.

DIAGNOSTIC FUNCTION
When the signals from occupant classification-ECU
cannot be received, the SRS-ECU sets the DTC
U0154.

JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if SRS-
ECU becomes unable to perform the normal data

transmission, SRS-ECU determines that an
abnormality is present.

TROUBLESHOOTING HINTS

｠

The CAN bus line may be defective

｠

The occupant classification-ECU may be defective

｠

The SRS-ECU may be defective

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: Vehicles 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)

52B-268

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

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

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."

(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 54D,

Diagnosis P.54D-17).

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

Q:Is the DTC B1BAA, B2207, B2208, B2209, B220A, B220B,

B220C, B220D or B2255 set?

YES:

Carry out troubleshooting of the occupant

classification-ECU or the occupant classification sensor
system. (Refer to P.52B-33.)

NO:

Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the SRS-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 SRS-ECU.

NO:

There is an intermittent malfunction such as poor

engaged connector(s) or open circuit (Refer to GROUP 00,
How to use Troubleshooting/inspection Service Points P.
00-15).

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-269

SRS AIR BAG DIAGNOSIS

DTC U0155: Combination Meter CAN Timeout

M15204001005USA0000010000

｠

If the DTC U0155 is set, be sure to diagnose the
CAN main bus line.

｠

When replacing the ECU, always check that the
communication circuit is normal.

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

JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if SRS-
ECU becomes unable to perform the normal data

transmission, SRS-ECU determines that an
abnormality is present.

TROUBLESHOOTING HINTS

｠

The CAN bus line may be defective

｠

The combination meter may be defective

｠

The SRS-ECU may be defective

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: Vehicles 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.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
scan tool P.52B-31."

(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 54D,

Diagnosis P.54D-17).

52B-270

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS