LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Occupant Restraint Controller (Orc) - DTCS B2207 To U1476-00) >> DTC Troubleshooting >> U1470-00-Implausible Data Received From Left Impact Pressure Sensor >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Make sure the battery is fully charged.

    1. Turn the ignition on.
    2. With the scan tool, read ORC DTCs.

      Does the scan tool display active: DTC U1470-00-IMPLAUSIBLE DATA RECEIVED FROM LEFT IMPACT PRESSURE SENSOR?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS FOR A SHORT TO VOLTAGE 
    WARNING:

    Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Disconnect the Left Side Impact Pressure Sensor harness connector.
    2. Disconnect the ORC harness connectors.
      NOTE:

      Check connectors - Clean and repair as necessary.

    3. Connect the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) to the ORC C1 and C2 harness connectors.
      WARNING:

      Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    4. Measure the voltage of the (R130) Left Side Impact Pressure Sensor Signal circuit and (R150) Left Side Impact Pressure Sensor Ground circuit between the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) c1B-31 and ground and the C1B-32 and ground.

      Is there any voltage present?

      Yes 

      • Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits for a short to voltage.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    WARNING:

    Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Measure the resistance of the (R130) Left Side Impact Pressure Sensor Signal circuit between the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) c1B-31 and ground.

      Is the resistance below 20 Ohms?

      Yes 

      • Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for a short to ground.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER 
    1. Measure the resistance between the (R130) Left Side Impact Pressure Sensor Signal circuit and the (R150) Left Side Impact Pressure Sensor Ground circuits between the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) c1B-31 and C1B-32.

      Is the resistance below 20 Ohms?

      Yes 

      • Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits shorted together.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE (R150) LEFT SIDE IMPACT PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (R150) Left Side Impact Pressure Sensor Ground circuit between the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) c1B-32 and the Left Side Impact Pressure Sensor harness connector terminal 2.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  6

      No 

      • Repair the (R150) Left Side Impact Pressure Sensor Ground circuit for an open or high resistance.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  6. CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (R130) Left Side Impact Pressure Sensor Signal circuit between the (special tool #8443-57, Adapter, Supplemental Restraint System Load Tool) c1B-31 and the Left Side Impact Pressure Sensor harness connector terminal 1.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  7

      No 

      • Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for an open or high resistance.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  7. CHECK OPERATION OF THE PASSENGER DOOR PRESSURE SENSOR (SATELLITE) 
    1. Replace the Left Door Pressure Sensor. Refer to SENSOR, IMPACT, REMOVAL .
    2. Reconnect the vehicle body harness to the impact pressure sensor.
    3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.
      WARNING:

      Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    4. Connect the scan tool to the Data Link Connector - use the most current software available.
    5. Use the scan tool and erase the stored codes in all airbag system modules.
    6. Turn the Ignition Off, and wait five seconds before turning the Ignition On.
    7. Wait one minute, and read active codes and if there are none present read the stored codes.

      Did the active: U1470-00-IMPLAUSIBLE DATA RECEIVED FROM LEFT IMPACT PRESSURE SENSOR return?

      Yes 

      WARNING:

      Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

      WARNING:

      If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.

      No 

scientia non olet · About LEMON Manuals