Special Tools Required

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

SRS inflator simulator 07SAZ-TB4011A
SRS simulator lead L 070AZ-SNAA300

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 , General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ) and 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 DTCs with the HDS (see CLEAR THE DTC MEMORY ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Check for the DTCs with the HDS (see READING THE DTC ).
Is DTC 42-1x indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch to LOCK (0).
Disconnect the negative cable from the battery, then wait at least 3 minutes.
Check for these connector connections:
- SRS unit connector A (39P) and the SRS unit, (see step 10 under Disconnecting System Connectors ).
- Right front impact sensor 2P connector on the right engine compartment wire harness, (see FRONT IMPACT SENSOR REPLACEMENT ).
- C202 (see CONNECTOR TO FUSE/RELAY BOX INDEX ).
Are the connections OK?

YES - Go to step 7.

NO - Repair the poor connections, then clear the DTC, and retest. If DTC 42-1x is still present, go to step 7.
Disconnect SRS unit connector A (39P) from the SRS unit (see step 10 under Disconnecting System Connectors ).
Disconnect the right engine compartment wire harness 2P connector (A) from the right front impact sensor (see FRONT IMPACT SENSOR REPLACEMENT ).

Fig 1: Identifying Left Engine Compartment Wire Harness 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between SRS unit connector A (39P) terminals No. 38 and No. 39.
Is there an open circuit, or at least 1 MΩ ?

YES - Go to step 10.

NO - Short to another wire in the right engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.

Fig 2: Identifying Left Engine Compartment Wire Harness 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between body ground and SRS unit connector A (39P) terminals No. 38 and No. 39, individually.

Fig 3: Measuring Resistance Between Body Ground & SRS Unit Connector A (39P) Terminals No. 38 & No. 39
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there an open circuit, or at least 1 MΩ ?

YES - Go to step 11.

NO - Short to ground in the right engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.
Reconnect the negative cable to the battery.
Turn the ignition switch to ON (II).
Measure the voltage between body ground and SRS unit connector A (39P) terminals No. 38 and No. 39 individually.

Fig 4: Measuring Voltage Between Body Ground & SRS Unit Connector A (39P) Terminals No. 38 & No. 39
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.2 V?

YES - Go to step 14.

NO - Short to power in the right engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.
Turn the ignition switch to LOCK (0).
Connect the black terminals (A) of SRS simulator lead L to the SRS inflator simulator (jumper connector), and then connect SRS simulator lead L to the right front impact sensor 2P connector (B) on the right engine compartment wire harness.

Fig 5: Connecting SRS Inflator Simulator & Black Lead Of Simulator Lead L To Right Engine Compartment 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between SRS unit connector A (39P) terminals No. 38 and No. 39.

Fig 6: Measuring Resistance Between SRS Unit Connector A (39P) Terminals No. 38 & No. 39
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω ?

YES - Faulty right front impact sensor or SRS unit-replace the right front impact sensor (see FRONT IMPACT SENSOR REPLACEMENT ), then clear the DTC. If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ). If the DTC is still present; Replace the faulty engine compartment wire harness or dashboard wire harness.

NO - Open in the right engine compartment wire harness or the dashboard wire harness; replace the faulty harness, then clear the DTC.