INTERMITTENT CONCERN TROUBLESHOOTING [L3 R.H.D.]

Vibration Method

1. If the malfunction occurs or becomes worse while driving on a rough road or when engine is vibrating, perform the following steps below:

Note

• There are several reasons vehicle or engine vibration could cause an electrical malfunction. Some of the things to inspect for are:

- Connectors not fully seated

- Wiring harnesses not having full play

- Wiring harnesses laying across brackets or moving parts

- Wiring harnesses routed too close to hot parts

• An improperly routed, improperly clamped, or loose wiring harness can cause wiring to become pinched between parts.

• The connector joints, points of vibration, and places where wire harnesses pass through the fire wall, or body panels are the major areas to be inspected.

Inspection Method for Switch Connectors or Wiring Harnesses

1. Connect the WDS or equivalent to the DLC-2.

2. Turn the ignition switch to the ON position (engine off).

Note

• If engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch being inspected.

4. Turn switch on manually.

5. Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID.

• If the PID value is unstable, inspect for poor connection.

Inspection Method for Sensor Connectors or Wiring Harnesses

1. Connect the WDS or equivalent to the DLC-2.

2. Turn the ignition switch to the ON position (engine off).

Note

• If the engine starts and runs, perform the following steps during idle.

3. Access PIDs for the switch being inspected.

4. Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID.

• If the PID value is unstable, inspect for poor connection.

Inspection Method for Sensors

1. Connect the WDS or equivalent to the DLC-2.

2. Turn the ignition switch to the ON position (engine off).

Note

• If the engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch being inspected.

4. Vibrate the sensor slightly with your finger.

• If the PID value is unstable or a malfunction occurs, check for poor connection and poorly mounted sensor.

Inspection Method for Actuators or Relays

1. Connect the WDS or equivalent to the DLC-2.

2. Turn the ignition switch to the ON position (Engine off).

Note

• If the engine starts and runs, perform the following steps at idle.

3. Prepare the Output State Control for actuators or relays being inspected.

4. Slightly vibrate the actuator or relay with your finger for 3 s until the Output State Control is activated.

• If a clicking sound is heard, inspect for poor connection and poorly mounted actuator or relay.

Note

• Vibrating relays too strongly may result in open relays.

Water Sprinkling Method

Caution

• Indirectly change the temperature and humidity by spraying water onto the front of the radiator.

• If a vehicle is subject to water leakage, the leakage may damage the control module. Exercise special caution when testing a vehicle with a water leakage problem.

If the malfunction occurs only during high humidity or rainy/snowy weather, perform the following steps.

1. Connect WDS or equivalent to DLC-2 if you are inspecting sensors or switches.

2. Turn the ignition switch to the ON position (Engine off).

Note

• If the engine starts and runs, perform the following steps at idle.

3. Access PIDs for the sensor or switch being inspected.

4. Manually turn on any switch being inspected.

5. Spray water onto the vehicle or run it through a car wash.

• If any PID value is unstable or a malfunction occurs, repair or replace malfunctioning part.