DIAGNOSTIC TROUBLE CODE (DTC) - P1382 ROUGH ROAD DATA INVALID (NON ABS)

DIAGNOSTIC TROUBLE CODE
DTC - P1382 ROUGH ROAD DATA INVALID (NON ABS)

Knowing The Circuit

 

  • This circuit utilizes the VR sensor to fathom the road situation.
  • The VR sensor is located in front-right wheel
  • The Engine Control Module (ECM) is devised to diagnose whether the changes in crankshaft speed are a result of engine misfire or driveline induced.
  • This is done by determining the difference in the wheel rotation duration caused by obstacles like road bumps or potholes in the road.
  •  If the VR sensor detects a rough road condition, The ECM misfire detection diagnostic will be de-activated once the VR Sensor identifies a rough road condition.

 

      When will DTC set?

What happens when DTC sets?

    When will DTC clear?

1) Vehicle speed > than 10km/h (6.21mph).

 

1) The Malfunction Indicator Lamp (MIL) will cease to glow

1) A history DTC will clear after 40 repetitive warm-up cycles faultlessly

2) No Vehicle Speed Sensor error not set

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

 

2) The Scan Tool removes all DTC(s).

3) VR sensor output signal > than 0.26.

 

3) This information will not be stored in the Freeze Frame data

3) Disconnecting the ECM battery feed for more than 10 seconds.

 

4) VR sensor output signal is not altered for 30seconds

-

-

 

 

TABULATION OF THE STEPS TOP BE UNDEFTAKEN

DTC P1382 - Rough Road Data Invalid (NON ABS)

 

Step

Action

R    E     S

U    L    T

1

Undertake the EOBD System Check.

 

Test Over?

 

          IF  YES  

     THEN

Follow Step 2

        IF  NO  

     THEN

Go to "On-Board Diagnostic System Check"

2

1) Keeping the engine OFF, turn the ignition ON.

2) Insert a scan tool and connect it to the Data Link Connector (DLC).

3) Review and record the scan tool Failure Records data.

4) Run the vehicle within Failure Records conditions as noted already.

5) Observe specific Diagnostic Trouble Code (DTC) information for DTC P1382 with the help of a scan Tool.

Is a DTC P1382 failure highlighted?

       IF  YES  

     THEN

Follow Step 4

       IF  NO     

  THEN

Follow Step 3

3

1) Observe the following conditions and mend  as needed:

  • VR sensor seal missing or damaged.
  • VR sensor mounting flanges cracked, missing, or incorrectly installed.

Task Done?

         IF  YES    

   THEN

Follow Step 14

            IF  NO   

    THEN

Go to "DIAGNOSTICS  TOOLS"

4

1) Switch the ignition OFF.

2) Remove the VR sensor electrical connector.

3) Now turn the ignition ON, keeping the engine OFF.

4) Note the VR sensor value highlighted on the scan tool.

Note: The value at this point is 0V

 

Is the VR sensor value anywhere near the specified value?

         IF  YES   

    THEN

Follow Step 5

       IF  NO     

 THEN

Follow 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) Measure the VR sensor value exhibited on the scan tool.

Note: The value at this point is 4.95V

 

Do You see that the VR sensor value is somewhere near the specified value?

 

 

 

 

 

 

 

       IF  YES   

    THEN

 

Follow Step

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

       IF  NO    

  THEN

 

Follow Step

7

 

 

 

 

 

 

 

6

1) Now turn the ignition OFF.

2) Remove the Engine Control Module (ECM) and examine 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.

Work Done?

     IF  YES   

THEN

Follow Step 14

IF  NO

THEN

 

Follow Step 10

7

Inspect 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.

 

Task complete?

       IF  YES    

  THEN

Follow Step 14

       IF  NO    

   THEN

Follow Step 8

8

1) Again turn the ignition OFF.

2) Dissociate 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 mend as needed.

Work Done?

      IF  YES  

  THEN

Follow Step14

        IF  NO     

 THEN

Follow Step9

9

Examine the VR sensor signal circuit for a poor connection at the ECM and repair as needed.

 

Work Over?

            IF  YES    

   THEN

Follow Step 14

          IF  NO   

    THEN

Follow Step 13

10

Watch out for a poor connection at terminal 2 of the VR sensor and repair as needed.

 

Task Over?

           IF  YES   

    THEN

Follow Step 14

IF  NO

   THEN

Follow Step 11

11

Change the VR sensor.

 

Change Made?

        IF  YES     

  THEN

Follow Step 14

-

12

1) Once more turn the ignition OFF.

2) Remove the ECM.

3) Once more turn the ignition ON.

4) Look out for the VR sensor signal circuit for a short to battery voltage or a short to the 5 volt reference circuit and repair as needed.

Task undertaken?

            IF  YES   

    THEN

Follow Step 14

IF  NO

 THEN

Follow Step 13

13

1) Turn the ignition OFF.

2) Substitute the ECM.

Substitution Made?

          IF  YES      

 THEN

Follow Step 14

-

14

      1) Unset the DTCs, taking a scan tool.

2) Start the engine and idle at normal operating temperature.

3) Run the vehicle within the parameters needed for setting this DTC as mentioned in the supporting text.

Does the scan tool indicate that this diagnostic has been run and passed?

         IF  YES  

     THEN

Follow Step 15

          IF  NO 

        THEN

Follow Step 2

15

Check if any additional DTCs are set.

 

Do you see any undiagnosed DTC still being displayed?

         IF  YES   

    THEN

Go to Applicable DTC table

       IF  NO    

  THEN

The System of your car is  OK