Daewoo Matiz (2003 year). Manual - part 64

 

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Daewoo Matiz (2003 year). Manual - part 64

 

 

1F – 166  ENGINE CONTROLS

MAA1F210

DIAGNOSTIC TROUBLE CODE (DTC) – P1382 ROUGH ROAD DATA INVALID

(NON ABS)

Circuit Description

The VR sensor is used to detecting the road situation.

By sensing difference of wheel rotation duration caused
by bumps or potholes in the road, the Engine Control
Module (ECM) can determine if the changes in crank-
shaft speed are due to engine misfire or are driveline in-
duced. If the VR sensor detects a rough road condition,
the ECM misfire detection diagnostic will be de-acti-
vated.

The VR sensor is located in front–right wheel.

Conditions for Setting the DTC

D

Vehicle speed is higher than 10km/h(6.21mph).

D

No Vehicle Speed Sensor error not set.

D

VR sensor output signal is higher than 0.26.

D

VR sensor output signal is not change for 30seconds.

Action Taken When The DTCs Sets

D

The Malfunction Indicator Lamp (MIL) will not illumi-
nate.

D

The ECM will store conditions which were present
when the DTC was set as Failure Records data only.

D

This information will not be stored in the Freeze
Frame data.

Conditions for Clearing the MIL/DTC

D

A history DTC will clear after 40 consecutive warm-up
cycles without a fault.

D

DTC(s) can be cleared by using the scan tool.

D

Disconnecting the ECM battery feed for more than 10
seconds.

ENGINE CONTROLS  1F – 167

DTC P1382 – Rough Road Data Invalid (NON ABS)

Step

Action

Value(s)

Yes

No

1

Perform an Euro On-Board Diagnostic (EOBD)
System Check.
Was the check performed?

–

Go to Step 2

Go to

“On-Board
Diagnostic

System Check”

2

1. Turn the ignition ON, with engine OFF.
2. Install a scan tool to the Data Link Connector

(DLC).

3. Review and record the scan tool Failure Records

data.

4. Operate the vehicle within Failure Records

conditions as noted.

5. Using the scan tool, monitor specific Diagnostic

Trouble Code (DTC) info for DTC P1382.

Does the scan tool indicate that DTC P1382 failed?

–

Go to Step 4

Go to Step 3

3

1. Check for the following conditions and repair as

needed:

2. VR sensor seal missing or damaged.
3. VR sensor mounting flanges cracked, missing, or

incorrectly installed.

Is the repair complete?

–

Go to Step 14

Go to

“Diagnostic

Aids”

4

1. Turn the ignition OFF.
2. Disconnect the VR sensor electrical connector.
3. Turn the ignition ON, with the engine OFF.
4. Observe the VR sensor value displayed on the

scan tool.

Is the VR sensor value near the specified value?

0V

Go to Step 5

Go to Step 12

5

1. Jumper the 5 volt reference circuit, terminal 1 and

the VR sensor signal circuit, terminal 2 together at
the VR sensor harness connector.

2. Observe the VR sensor value displayed on the

scan tool.

Is the VR sensor value near the specified value?

4.95V

Go to Step 6

Go to Step 7

6

1. Turn the ignition OFF.
2. Disconnect the Engine Control Module (ECM) and

check the sensor ground circuit for high
resistance, an open between the ECM and the
wheel speed sensor, or for a poor connection at
the terminal 85 of the ECM and repair as needed.

Is the repair complete?

–

Go to Step 14

Go to Step 10

7

Check the 5 volt reference circuit for high resistance,
an open between the ECM and the VR sensor, or a
poor connection at the terminal 55 of the ECM and
repair as needed.
Is the repair complete?

–

Go to Step 14

Go to Step 8

8

1 Turn the ignition OFF.
2. Disconnect the ECM and check the VR sensor

signal circuit for high resistance, an open, a low
voltage, or a short to the sensor ground circuit
and repair as needed.

Is the repair complete?

–

Go to Step 14

Go to Step 9

1F – 168  ENGINE CONTROLS

DTC P1382 – Rough Road Data Invalid (NON ABS) (Cont’d)

Step

Action

Value(s)

Yes

No

9

Check the VR sensor signal circuit for a poor
connection at the ECM and repair as needed.
Is the repair complete?

–

Go to Step 14

Go to Step 13

10

Check for a poor connection at terminal 2 of the VR
sensor and repair as needed.
Is the repair complete?

–

Go to Step 14

Go to Step 11

11

Replace the VR sensor.
Is the repair complete?

–

Go to Step 14

–

12

1. Turn the ignition OFF.
2. Disconnect the ECM.
3. Turn the ignition ON.
4. Check the VR sensor signal circuit for a short to

battery voltage or a short to the 5 volt reference
circuit and repair as needed.

Is the repair complete?

–

Go to Step 14

Go to Step 13

13

1. Turn the ignition OFF.
2. Replace the ECM.
Is the repair complete?

–

Go to Step 14

–

14

1. Using the scan tool, clear the DTCs.
2. Start the engine and idle at normal operating

temperature.

3. Operate the vehicle within the conditions for

setting this DTC as specified in the supporting
text.

Does the scan tool indicate that this diagnostic ran
and passed?

–

Go to Step 15

Go to Step 2

15

Check if any additional DTCs are set.
Are any DTCs displayed that have not been
diagnosed?

–

Go to

Applicable DTC

table

System OK

ENGINE CONTROLS  1F – 169

BLANK

 

 

 

 

 

 

 

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