Touch Sensor Circuit Troubleshooting

Connect the HDS to the data link connector (DLC).
Turn the ignition switch ON (II).
Clear the freeze data with the HDS.
Select the HISTORY DATA, and record the ON/OFF information for the following touch sensors:
NOTE: When the freeze data is cleared, the information indicates "OFF".
- SW SMA UNLOCKDR
- SW SMA UNLOCKAS
- SW SMA LOCKDR
- SW SMA LOCKAS
Turn the ignition switch OFF.
Get out of the vehicle with the remote, and press the driver's or front passenger's door outer handle touch sensor.
Check the ON/OFF information.
Is ail the information changed from OFF to ON?

YES - The system is OK at this time.

NO - Go to step 8.
Disconnect the faulty outer handle touch sensor 8P connector.
Check for continuity between body ground and outer handle touch sensor 8P connector terminals No. 5 and No. 8 individually.

Fig 1: Checking Continuity Between Body Ground And Outer Handle Touch Sensor 8P Connector Terminals No. 5 And No. 8
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 10.

NO - Repair an open in the wire or poor ground (G601: driver's side, G506: passenger's side).
Measure the voltage between outer handle touch sensor 8P connector terminal No. 1 and body ground.

Fig 2: Measuring Voltage Between Outer Handle Touch Sensor 8P Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES - Go to step 11.

NO - Blown No. 7 (10A) fuse in the driver's under-dash fuse/relay box. If the fuse is OK, check the wire between the touch sensor and the driver's under-dash fuse/relay box.
Disconnect keyless access control unit connector A (31P) and connector B (24P).
Connect the driver's (or front passenger's)* door outer handle touch sensor 8P connector No. 2 and No. 6 terminals to body ground with jumper wires.

Fig 3: Connecting No. 2 And No. 6 Terminals To Body Ground With Jumper Wires
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between keyless access control unit connector A (31P) terminals No. 19 and No. 20 and body ground (for front passenger's door touch sensor) or between keyless access control unit connector B (24P) terminals No. 22 and No. 23 and body ground (for driver's door touch sensor).

Fig 4: Checking Continuity Between Keyless Access Control Unit Connector A (31P) Terminals No. 19 And No. 20 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: Checking Between Keyless Access Control Unit Connector B (24P) Terminals No. 22 And No. 23 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 14.

NO - Repair an open in the wire.
Remove the jumper wires from the touch sensors.
Check for continuity between keyless access control unit connector A (31P) terminals No. 19 and No. 20 and body ground (for front passenger's door touch sensor), or between keyless access control unit connector B (24P) terminals No. 22 and No. 23 and body ground (for driver's door touch sensor).

Fig 6: Checking Continuity Between Keyless Access Control Unit Connector A (31P) Terminals No. 19, 20 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 7: Checking Continuity Between Keyless Access Control Unit Connector B (24P) Terminals No. 22, 23 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair a short to ground in the wire.

NO - Substitute a known-good touch sensor and recheck. If there is still a malfunction, replace the keyless access control unit.