Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Shift Lock System Circuit Troubleshooting
- Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
- Turn the ignition switch to ON (II). Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ).
- Select Shift Lock Solenoid Test in the Miscellaneous Test Menu, and check that the shift lock solenoid operates with the HDS.
Does the shift lock solenoid work properly?
YES -Go to step 14.
NO -Go to step 4.
- Turn the ignition switch to LOCK (0).
- Disconnect the D3 switch/shift lock solenoid connector.
- Turn the ignition switch to ON (II).
- Measure the voltage between D3 switch/shift lock solenoid connector terminal No. 3 and body ground.Fig 2: Measuring Voltage Between D3 Switch/Shift Lock Solenoid Connector Terminal No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -Go to step 8.
NO -Check for a blown No. 10 fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the D3 switch/shift lock solenoid connector and the under-dash fuse/relay box.
- Move the shift lever to P, and press the brake pedal. Do not press the accelerator.
- Measure the voltage between D3 switch/shift lock solenoid connector terminals No. 3 and No. 4 while pressing the brake pedal.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -Go to step 10.
NO -Go to step 12.
- Release the brake pedal, and measure the voltage between shift lock solenoid connector terminals No. 3 and No. 4. The shift lever must be in P.
Is there battery voltage?
YES -Repair a short in the wire between PCM connector terminal E2 and the shift lock solenoid connector.
NO -Go to step 11.
- Connect the battery positive terminal to D3 switch/shift lock solenoid connector terminal No. 3, and connect the battery negative terminal to the terminal No. 4, then check that the shift lock solenoid operates.NOTE: Do not connect the battery positive terminal to terminal No. 4 or you will damage the diode inside the shift lock solenoid.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
