Honda CR-V: General Troubleshooting Information

DTC (Diagnostic Trouble Codes)

The self-diagnostic function of the SRS system allows it to locate the causes of system problems and then store this information in memory. For easier troubleshooting, this data can be retrieved via a data link circuit.

Precautions

Reading the DTC

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the DLC (A).

Honda CR-V. SRS (Supplemental Restraint System)

3. Turn the ignition switch ON (II).

4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.

5. Use the HDS to check for DTCs.

6. Read and record the DTC.

7. Turn the ignition switch OFF, and wait for 10 seconds.

8. Disconnect the HDS from the DLC.

9. Do the troubleshooting procedure for the DTC.

Erasing the DTC Memory With the HDS

NOTE: Make sure the battery is fully charged before you begin.

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the DLC (A).

Honda CR-V. SRS (Supplemental Restraint System)

3. Turn the ignition switch ON (II).

4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.

5. In the SRS MENU of the HDS, select SRS, then DTC to erase DTC(s).

6. Turn the ignition switch OFF, and wait for 10 seconds.

7. Disconnect the HDS from the DLC.

Erasing the DTC Memory Using MES Connector Without the HDS

Special Tools Required

SCS Service Connector 07PAZ-001010A

NOTE: Make sure the battery is fully charged before you begin.

To erase the DTC(s) from the SRS unit, use the HDS or the following procedure.

1. Make sure the ignition switch is OFF.

2. Connect the SCS service connector (A) to the yellow MES 2P connector (B). Do not use a jumper wire.

Honda CR-V. SRS (Supplemental Restraint System)

3. Turn the ignition switch ON (II).

4. The SRS indicator will come on for about 6 seconds, and then go off. Remove the SCS service connector from the MES connector (2P) within 4 seconds after the indicator goes off.

5. The SRS indicator will come on again. Reconnect the SCS service connector to the MES connector (2P) within 4 seconds after the indicator comes on.

6, When the SRS indicator goes off, remove the SCS service connector from the MES connector (2P) within 4 seconds.

7. The SRS indicator blinks two times, indicating that the memory has been erased.

8. Turn the ignition switch OFF, and wait for 10 seconds.

9. Turn the ignition switch ON (II) again. If the SRS indicator comes on for 6 seconds, and then goes off, the system is OK.

Troubleshooting Intermittent Failures

If there was a malfunction that sets a DTC, but it does not recur, it will be stored in the memory as an intermittent failure, and the SRS indicator may come on depending on the malfunction detected.

NOTE: Check the condition of the battery, and the charging system. Low battery voltage may cause some intermittent failures.

After checking the DTC, troubleshoot as follows:

1. Read the DTC (see "Reading the DTC").

2. Erase the DTC memory (see "Erasing the DTC Memory").

3. Set the parking brake, then start the engine, and let it idle.

4. The SRS indicator comes on for about 6 seconds and then goes off.

5. Shake the related wire harnesses and the connectors, and look for loose connections, poor pinfits, and poor grounds.

6. Take a test-drive (quick acceleration, quick braking, and cornering), turn the steering wheel fully left and right, and hold it there for 5 to 10 seconds. If the problem recurs, the SRS indicator will come on.

NOTE: A faulty cable reel can cause intermittent connections related to the driver's airbag inflator DTCs.

7. If you cannot duplicate the concern, ask the customer about the conditions when it occured, or ask the customer to demonstrate the concern.

8. If you cannot duplicate the intermittent failure, the system is OK at this time.

Checking Seat Weight Sensors After a Vehicle Collision

1. Position the front passenger's seat to the rear most position, adjust the recliner to the most forward position. Do not move it from this position.

2. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.

3. Connect the HDS to the data link connector (DLC) (A).

Honda CR-V. SRS (Supplemental Restraint System)

4. From the SRS inspection menu, select Seat Weight Sensor, then Misc test, then "SEAT OUTPUT CHK" and follow the prompts until the ODS operation check has been completed.

ODS Unit Initialization

When a seat-back cover, seat-back cushion, and/or ODS unit is replaced, initialize the ODS by following the procedure.

NOTE: A new (uninitialized) ODS unit installed with a faulty OPDS sensor can cause DTC 85-71.

1. Erase the DTC memory.

2. Make sure the front passenger's seat is dry. Set the seat-back in a normal position, and make sure there is nothing on the seat.

3. Make sure the ignition switch is OFF and the MES connector is not shorted.

4. Connect the HDS to the DLC (A).

Honda CR-V. SRS (Supplemental Restraint System)

5. Turn the ignition switch ON (II).

6. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.

7. From the HDS Main Menu, select SRS, then SRS, then Calibration. In the Calibration Menu, select ODS INITIALIZATION. Follow the screen prompts to initialize the ODS.

8. Turn the ignition switch OFF.

9. Disconnect the HDS from the DLC.

NOTE: If the ODS system fails to initialize after several attempts, replace the OPDS sensor/seatback and retry. If the ODS system continues to fail to initialize, replace the ODS unit.

ODS Unit Calibration

When you replace the SRS unit, front passenger's weight sensors, or the ODS unit, calibrate the ODS unit.

While calibrating the ODS unit, observe these precautions:

1. Position the front passenger's seat to the rearmost position, and adjust the recliner to the most forward position. Do not move the seat from these positions.

2. Connect the HDS to the data link connector (DLC) (A).

Honda CR-V. SRS (Supplemental Restraint System)

3. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.

4. Drive the vehicle, and accelerate to 20 mph (36 km/h), then stop on level ground.

5. From the Main Menu, select SRS, then Calibration, then Misc Test, then select "SWS INITIALIZATION," and follow the prompts until the initialization operation has been completed.

ODS Unit Operation Check

Check the ODS operation after any of these actions.

Pre-Operation Check Set-up

After Replacing Front Passenger's Seat Component(s)

1. Connect the HDS to the data link connector (DLC) (A).

Honda CR-V. SRS (Supplemental Restraint System)

2. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not, troubleshoot the DLC circuit.

3. Drive the vehicle, accelerate to 20 mph (36 km/h), then stop on level ground.

4. From the HDS Main Menu, select SRS, then Inspection. In the HDS Inspection Menu, select "SEAT OUTPUT CHK" and follow the prompts until the ODS operation check has been completed.

Driver's Seat Position Sensor Operation Check

Check the driver's seat position after any of these actions.

1. Make sure the driver's seat is at its full forward position.

2. Make sure the ignition switch is OFF (0).

3. Connect the HDS to the DLC (A).

Honda CR-V. SRS (Supplemental Restraint System)

4. Turn the ignition switch ON (II).

5. From the HDS Main Menu, select SRS, then Parameter Information, then Buckle Switch, Seat Position Sensor.

6. Using a piece of tape (A), mark the location on the seat's outer cover (B) where the front riser cover meets the seat riser (C). The driver's seat position sensor should read "NEAR."

Honda CR-V. SRS (Supplemental Restraint System)

7. Move the seat back in small increments (about 0.2 in., 5 mm) until the driver's seat position sensor reads "NOT NEAR." The seat should be approximately 1 in. (25 mm) from the front.

NOTE: It takes a few seconds for the HDS to display changes, so wait about 5 seconds between each move.

If the driver's seat position sensor data does not work as described above, check the driver's seat position sensor or the cover plate for damage, and replace parts as needed.

8. Turn the ignition switch OFF, and disconnect the HDS from the DLC.

DTC Troubleshooting Index

Honda CR-V. SRS (Supplemental Restraint System)

Honda CR-V. SRS (Supplemental Restraint System)

NOTE: The "x" at the end of each DTC denotes a numeric character (0 thru 9) or an alpha character (A thru F) that you will see on the HDS display. The character is unrelated to your troubleshooting; it designates the SRS unit manufacturer and other detail used for product analysis.

* 1: The SRS indicator turns on and stays on whenever the ignition switch is in the ON (II) position, or until the code is cleared.
* 2: The SRS indicator turns on when the DTC is set. The SRS indicator will not turn on after the ignition switch is cycled from ON (II) to OFF (0), but the DTC will be stored in the SRS unit.

Honda CR-V. SRS (Supplemental Restraint System)

Honda CR-V. SRS (Supplemental Restraint System)

NOTE: The "x" at the end of each DTC denotes a numeric character (0 thru 9) or an alpha character (A thru F) that you will see on the HDS display. The character is unrelated to your troubleshooting; it designates the SRS unit manufacturer and other detail used for product analysis.

* 1: The SRS indicator turns on and stays on whenever the ignition switch is in the ON (II) position, or until the code is cleared.
* 2: The SRS indicator turns on when the DTC is set. The SRS indicator will not turn on after the ignition switch is cycled from ON (II) to OFF (0), but the DTC will be stored in the SRS unit.

ODS Unit DTC Index

Honda CR-V. SRS (Supplemental Restraint System)

ODS Unit DTC Index

Honda CR-V. SRS (Supplemental Restraint System)

Symptom Troubleshooting Index

Honda CR-V. SRS (Supplemental Restraint System)

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