Mitsubishi Outlander XL. Manual — part 935

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:

Diagnose the combination meter (Refer to GROUP 54Ab,

Diagnosis P.54Ab-7).

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).

DTC U0164: A/C-ECU CAN Timeout

M15204001006USA0000010000

｠

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

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 A/C-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)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-271

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 (M.U.T.-III) 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 A/C diagnostic
trouble code
Check if DTC is set to the A/C-ECU.

Q:Is the DTC set?

YES:

Troubleshoot the A/C (Refer to GROUP 55B, Auto A/C

Diagnosis P.55B-7).

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).

DTC U0168: KOS-ECU or WCM CAN Timeout

M15204001015USA0000010000

｠

If DTC U0168 is set, be sure to diagnose the CAN
bus line.

｠

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

52B-272

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS

DIAGNOSTIC FUNCTION
If the signal from KOS-ECU or WCM cannot be
received, the SRS-ECU sets the DTC U0168.

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

｠

Malfunction of CAN bus line may be defective.

｠

Malfunction of the KOS-ECU may be defective.

｠

Malfunction of the WCM may be defective.

｠

Malfunction of 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 (M.U.T.-III) P.54Ab-5."

(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 KOS-ECU or
WCM diagnostic trouble code
Check again if the DTC is set to the KOS-ECU or WCM.

Q:Is the DTC set?

YES:

Troubleshoot the KOS or WCM (Refer to GROUP 42B,

Troubleshooting P.42B-18<KOS> or 42C, Troubleshooting P.
42C-11<WCM>).

NO:

Go to Step 3.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-273

SRS AIR BAG DIAGNOSIS

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).

DTC U0170: Front Impact Sensor (LH) Communication Error

M15204000974USA0000010000

FRONT IMPACT
SENSOR (RH)

FRONT IMPACT
SENSOR (LH)

SRS-ECU

CPU

CPU

Front Impact Sensor Circuit

ACCELERO
METER

ACCELERO
METER

52B-274

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SRS AIR BAG DIAGNOSIS