Code No. P0833: Clutch Switch (B) System <Vehicles with AS&G system>

OPERATION

The battery voltage is applied to the clutch switch (B) (terminal No. 1) from the ignition switch (terminal No. 2).
The ON/OFF signal is inputted to the engine-ECU (terminal No. 101) from the clutch switch (B) output terminal (terminal No. 6).

FUNCTION

Detect the clutch pedal status, which must be input into the engine-ECU. When the clutch pedal is fully depressed, the clutch switch (B) is turned ON. This allows the engine-ECU to detect the clutch pedal is fully depressed.

TROUBLE JUDGMENT

Check Condition

Ignition switch is in "ON" position.

Judgment Criterion

Although the driving is more than 30 km/h during the previous driving, the OFF signal of the clutch switch (B) is not output even once.

PROBABLE CAUSES

Failed clutch switch (B)
Shorted clutch switch (B) circuit, or connector damage
Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

Refer to Data List Reference Table .

Item No. 154: Clutch switch (B)

Q. Is the check result normal?

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

	Go to Step 2 .

STEP 2. Connector check: B-28 clutch switch (B) connector

Q. Is the check result normal?

Go to Step 3 .

Repair or replace the connector.

STEP 3. Check clutch switch (B) itself

Check clutch switch (B) itself (Refer to GROUP 21A - Clutch Pedal - Inspection ).

Q. Is the check result normal?

	Go to Step 4 .

	Replace the clutch switch (B).

STEP 4. Connector check: A-09 engine-ECU connector

Q. Is the check result normal?

Go to Step 5 .

Repair or replace the connector.

STEP 5. Perform voltage measurement at A-09 engine-ECU connector.

Disconnect connector, and measure at harness side.
Ignition switch: ON
Voltage between terminal No. 101 and earth.

OK:
System voltage (clutch pedal: depress)
1 V or less (clutch pedal: release)

Q. Is the check result normal?

Go to Step 6 .

Check output line for open/short circuit.

STEP 6. M.U.T.-III diagnosis code

Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?

	Replace the engine-ECU then perform the variant coding (Refer to GROUP 00 - Precautions Before Service - How to Perform Variant Coding ).

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).