Circuit Description
Battery voltage is supplied from the HTR VLV/CLTCH fuse to the clutch switch. The clutch switch is a normally closed switch. When the clutch pedal is released, the clutch pedal position switch signal circuit is pulled up to B+. When the clutch pedal is applied, the switch opens, and the voltage drops to 0 volts.
If the engine control module (ECM) detects a specified number of vehicle speed transitions without detecting a clutch switch transition, DTC P0833 sets. DTC P0833 is a type B DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0833 Clutch Pedal Switch 2 Circuit
Conditions for Running the DTC
No VSS DTC P0500.
Conditions for Setting the DTC
| • | The vehicle speed goes from 0 km/h (0 mph) to greater than 39 km/h (24 mph) and back to 0 km/h (0 mph) for 2 seconds without the ECM detecting a clutch transition. |
| • | This must occur 7 times before the diagnostic reports a fault. |
Action Taken When the DTC Sets
| • | The ECM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met. |
| • | The ECM disables cruise control. |
| • | The ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as Freeze Frame and Failure Records. |
| • | The ECM stores DTC P0833 in ECM history. |
Conditions for Clearing the MIL/DTC
| • | The ECM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes. |
| • | A scan tool can clear the MIL/DTC. |
| • | The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring. |
| • | The ECM cancels the DTC default actions when the fault no longer exists and the DTC passes. |
Diagnostic Aids
Important:
• Remove any debris from the ECM connector surfaces before servicing the ECM. Inspect the ECM connector gaskets when diagnosing/replacing the module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the
ECM. • For any test that requires probing the ECM or a component harness connector, use the
J 35616 GM terminal test kit. Using this kit prevents damage to the harness/component terminals. Refer to
Using Connector Test Adapters
.
For clutch switch adjustment, refer to Clutch Pedal Position Switch Replacement .
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This step ensures that the technician has performed a Diagnostic System Check.
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This test confirms if the scan tool is receiving a clutch switch position signal.
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This step inspects the clutch pedal connector and adjustment.
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This step tests for a short to ground.
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This step tests for voltage to the fuse.
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This step tests for voltage to the clutch pedal position switch.
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This step tests the clutch pedal position switch.
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This step tests the clutch pedal position switch signal circuit.
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This step tests the ignition 1 voltage circuit for a short to ground.
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This step tests the clutch pedal position switch signal circuit for a ground.
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This step ensures that the technician has verified the system is operating normally.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | ||
Important: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records. Using the Clear Info function erases the Freeze Frame and Failure Records from the ECM. Does the scan tool indicate a change in state when the clutch pedal is either applied or released? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | |
Inspect the adjustment of the clutch pedal position switch and the connector. Does the clutch switch require adjustment or the connector require service? | -- | Go to Step 11 | Go to Step 4 | |
Is the HTR VLV/CLTCH fuse open? | -- | Go to Step 9 | Go to Step 5 | |
Does the DMM indicate the specified value? | B+ | Go to Step 6 | Go to Step 12 | |
Does the DMM indicate the specified value? | B+ | Go to Step 7 | Go to Step 13 | |
Does the scan tool parameter display applied and released? | -- | Go to Step 15 | Go to Step 8 | |
Did you find a short to voltage, high resistance, or an open on the clutch pedal position switch signal circuit? | -- | Go to Step 14 | Go to Step 16 | |
Is the ignition 1 voltage circuit grounded? | -- | Go to Step 13 | Go to Step 10 | |
Using a DMM, test for a short to ground on the clutch pedal position switch signal circuit at the switch connector. Is the clutch pedal position switch signal circuit grounded? | -- | Go to Step 14 | Go to Step 15 | |
11 | Adjust the clutch pedal position switch or repair the connector as necessary. Did you complete the repair? | -- | Go to Step 17 | -- |
12 |
Important: Voltage to this fuse is run through the ignition relay. Refer to Power Distribution Schematics . Repair the power distribution circuit to the HTR VLV/CLTCH fuse. Did you complete the repair? | -- | Go to Step 17 | -- |
13 | Repair the open, high resistance, or short to ground in the ignition 1 voltage circuit or a parallel circuit that uses the fuse. Did you complete the repair? | -- | Go to Step 17 | -- |
14 | Repair the open, high resistance, or short in the clutch pedal position switch signal circuit. Did you complete the repair? | -- | Go to Step 17 | -- |
15 | Replace the clutch pedal position switch. Refer to Clutch Pedal Position Switch Replacement . Is the action complete? | -- | Go to Step 17 | -- |
16 | Replace the ECM. Refer to Control Module References for replacement, setup, and programming. Is the action complete? | -- | Go to Step 17 | -- |
Perform the following procedure in order to verify the repair:
Has the test run and passed? | -- | Go to Step 18 | Go to Step 2 | |
18 | With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed? | -- | System OK |
