DTC 44-lx ("x" can be 0 thru 9 or A thru F): No Signal From the Right Side Impact Sensor (first) (2010 Model); DTC 46-1x ("x" can be 0 thru 9 or A thru F): No Signal From the Right Side Impact Sensor (second) (2010 Model)

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed ( see COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT ).
Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ), General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ), and 12 Volt Battery Terminal Disconnection and Reconnection (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software (see SRS UNIT UPDATE ) and retest.

Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 46-xx (except 46-11) indicated?

YES -Faulty right side impact sensor (second); replace the right side impact sensor (second) (see INSTALLATION ), then clear the DTC.

NO -Go to step 4.
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 44-xx (except 44-11) indicated?

YES -Faulty right side impact sensor (first); replace the right side impact sensor (first) (see INSTALLATION ), then clear the DTC.

NO -Go to step 7.
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 44-11 indicated?

YES -Go to step 13.

NO -Go to step 10.
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 46-11 indicated?

YES -Go to step 39.

NO -Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures (see TROUBLESHOOTING INTERMITTENT FAILURES ). If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch to LOCK (0).
Check the connections between SRS unit connector B (39P) and the SRS unit, and between the floor wire harness 4P connector and the right side impact sensor (first) (see INSTALLATION ).
Are the connections OK?

YES -Go to step 15.

NO -Replace the floor wire harness, then clear the DTC.
Confirm that the DTC for left side impact sensor is not stored, and remove the left side impact sensor, or prepare a known-good side impact sensor.
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Exchange the right side impact sensor (first) for the impact sensor prepared in step 15.
Do the 12 volt battery terminal reconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 44-11 indicated?

YES -Go to step 22.

NO -Faulty right side impact sensor (first); replace the right side impact sensor (first) (see INSTALLATION ), then clear the DTC.
Turn the ignition switch to LOCK (0).
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Disconnect SRS unit connector B (39P) from the SRS unit (see step 10 ).
Disconnect the floor wire harness 4P connector from the right side impact sensor (first) (see INSTALLATION ).
Disconnect the floor wire harness 2P connector from the right side impact sensor (second) (see INSTALLATION ).
Measure the resistance between the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 2 and No. 3. There should be an open circuit or at least 1 MΩ.

Fig 1: Measuring Resistance Between Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 28.

NO -Short to another wire in the floor wire harness between the SRS unit and the right side impact sensor (first); replace the floor wire harness, then clear the DTC.
Measure the resistance between the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 1 and No. 4. There should be an open circuit or at least 1 MΩ.

Fig 2: Measuring Resistance Between Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 29.

NO -Short to another wire in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor wire harness, then clear the DTC.
Measure the resistance between body ground and the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 2 and No. 3, individually. There should be an open circuit or at least 1 MΩ.

Fig 3: Measuring Resistance Between Body Ground And Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 30.

NO -Short to ground in the floor wire harness between the SRS unit and the right side impact sensor (first); replace the floor wire harness, then clear the DTC.
Measure the resistance between body ground and the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 1 and No. 4, individually. There should be an open circuit or at least 1 MΩ.

Fig 4: Measuring Resistance Between Body Ground And Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 31.

NO -Short to ground in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor wire harness, then clear the DTC.
Do the 12 volt battery terminal reconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Measure the voltage between body ground and the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 2 and No. 3, individually. There should be less than 0.2 V.

Fig 5: Measuring Voltage Between Body Ground And Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage as specified?

YES -Go to step 34.

NO -Short to power in the floor wire harness between the SRS unit and the right side impact sensor (first); replace the floor wire harness, then clear the DTC.
Measure the voltage between body ground and the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 1 and No. 4, individually. There should be less than 0.2 V.

Fig 6: Measuring Voltage Between Body Ground And Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage as specified?

YES -Go to step 35.

NO -Short to power in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor wire harness, then clear the DTC.
Turn the ignition switch to LOCK (0).
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Install a jumper wire between SRS unit connector B (39P) terminals No. 38 and No. 39.

Fig 7: Identifying Jumper Wire Between SRS Unit Connector B (39P) Terminals No. 38 And No. 39
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 2 and No. 3. There should be less than 1.0 Ω.

Fig 8: Measuring Resistance Between Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Inspect contact failure on the connections, and if there is no failure, recheck the DTC again. If there is still a problem, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Open in the floor wire harness between the SRS unit and the right side impact sensor (first); replace the floor wire harness, then clear the DTC.
Check the connections between SRS unit connector B (39P) and the SRS unit, and between the floor wire harness 4P connector and the right side impact sensor (second) (see INSTALLATION ).
Are the connections OK?

YES -Go to step 40.

NO -Replace the floor wire harness.
Confirm that the DTC for left side impact sensor is not stored, and remove the left side impact sensor, or prepare a known-good side impact sensor.
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Exchange the right side impact sensor (second) for the impact sensor prepared in step 40.
Do the 12 volt battery terminal reconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 46-11 indicated?

YES -Go to step 47.

NO -Faulty right side impact sensor (second); replace the right side impact sensor (second) (see INSTALLATION ).
Turn the ignition switch to LOCK (0).
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Disconnect SRS unit connector B (39P) from the SRS unit (see step 10 ).
Disconnect the floor wire harness 4P connector from the right side impact sensor (first) (see INSTALLATION ).
Disconnect the floor wire harness 2P connector from the right side impact sensor (second) (see INSTALLATION ).
Measure the resistance between the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 2 and No. 4. There should be an open circuit or at least 1 MΩ.

Fig 9: Measuring Resistance Between Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 53.

NO -Short to another wire in the floor wire harness between the SRS unit and the right side impact sensor (first); replace the floor wire harness.
Install a jumper wire between the floor wire harness 2P connector (right side impact sensor (second)) terminals No. 1 and No. 2.

Fig 10: Identifying Jumper Wire Between Floor Wire Harness 2P Connector (Right Side Impact Sensor (Second)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between the floor wire harness 4P connector (right side impact sensor (first)) terminals No. 1 and No. 4. There should be less than 1.0 Ω.

Fig 11: Measuring Resistance Between Floor Wire Harness 4P Connector (Right Side Impact Sensor (First)) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Faulty right side impact sensor (first); replace the right side impact sensor (first) (see INSTALLATION ). If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Open in the floor wire harness between the right side impact sensor (first) and the right side impact sensor (second); replace the floor wire harness, then clear the DTC.