DTC 52-08: Torque Sensor Power Supply

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.

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Start the engine.
Check for DTCs with the HDS.
Is DTC 52-08 indicated?

YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time.
Turn the ignition switch to LOCK (0).
Disconnect EPS control unit connector B (16P), (see EPS CONTROL UNIT REMOVAL/INSTALLATION ).
Turn the ignition switch to ON (II).
Measure the voltage between EPS control unit connector B (16P) terminal No. 1 and body ground

Fig 1: Measuring Voltage Between Body Ground & EPS Control Unit Connector B (16P) Terminal 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Repair short to power in the wire harness between the EPS control unit and the torque sensor.

NO - Go to step 10.
Turn the ignition switch to LOCK (0).
Check for continuity between EPS control unit connector B (16P) terminal No. 1 and body ground.

Fig 2: Checking Continuity Between Body Ground & EPS Control Unit Connector B (16P) Terminal 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 12.

NO - Go to step 14.
Disconnect the torque sensor 6P connector (see EPS MOTOR REMOVAL AND INSTALLATION ).
Check for continuity between EPS control unit connector B (16P) terminal No. 1 and body ground.

Fig 3: Checking Continuity Between Body Ground & EPS Control Unit Connector B (16P) Terminal 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair a short to body ground in the wire harness between the EPS control unit and the torque sensor.

NO - Replace the steering gearbox (see STEERING GEARBOX REMOVAL AND INSTALLATION ).
Substitute a known-good EPS control unit (see EPS CONTROL UNIT REMOVAL/INSTALLATION ).
Start the engine.
Check for DTCs with the HDS.
Is DTC 52-08 indicated?

YES - Replace the steering gearbox (see STEERING GEARBOX REMOVAL AND INSTALLATION ).

NO - Replace the original EPS control unit (see EPS CONTROL UNIT REMOVAL/INSTALLATION ).