DTC P0806-P0808
Diagnostic Instructions
DTC Descriptors
| DTC P0806: Clutch Pedal Position (CPP) Sensor
Performance |
| DTC P0807: Clutch Pedal Position (CPP) Sensor
Circuit Low Voltage |
| DTC P0808: Clutch Pedal Position (CPP) Sensor
Circuit High Voltage |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
CPP Sensor 5V Reference
|
P0807
|
P0807
|
P0808
|
-
|
CPP Sensor Signal
|
P0807
|
P0807
|
P0808
|
P0806, P0833
|
CPP Sensor Low Reference
|
-
|
P0808
|
P0808
|
-
|
|
| |
Typical Scan Tool Data
CPP Sensor Voltage
Circuit
|
Short to Ground
|
Open
|
Short to Voltage
|
Operating Conditions:Ignition ON.
CPP Sensor Voltage Parameter Normal Range:1 V with clutch pedal
applied to 4.5 V when clutch pedal is released.
|
CPP Sensor 5V Reference
|
0 V
|
0 V
|
5 V
|
CPP Sensor Signal
|
0 V
|
0 V
|
5 V
|
CPP Sensor Low Reference
|
-
|
0 V
|
-
|
|
| |
CPP Sensor Percentage
Circuit
|
Short to Ground
|
Open
|
Short to Voltage
|
Operating Conditions: Ignition ON.
CPP Sensor Percent Parameter Normal
Range: 0% with clutch pedal released to 100% when
clutch pedal is applied.
|
CPP Sensor 5V Reference
|
100%
|
100%
|
100%
|
CPP Sensor Signal
|
100%
|
100%
|
100%
|
CPP Sensor Low Reference
|
-
|
0%
|
-
|
|
| |
Circuit/System Description
The clutch pedal position (CPP) sensor is a three wire sensor,
connected to a 5V reference circuit, a low reference circuit, and a
signal circuit. The engine control module (ECM) supplies 5 V to the
CPP sensor, and also provides a sensor ground path on the low
reference circuit. The CPP sensor sends a voltage signal to the ECM
on the signal circuit. The voltage on the signal circuit will vary
from a voltage less than or equal to 5 V when the clutch pedal is
released, to a voltage less than or equal to 1.5 V when the clutch
pedal is applied.
Conditions for Running the DTC
P0806, P0807 and P0808
| • |
DTCs P0641 or P0651 are not
set. |
| • |
The system voltage is more
than 9 V. |
| • |
The ignition is in the RUN
position. |
Conditions for Setting the DTC
P0806
The CPP sensor is stuck in range.
P0807
The CPP sensor voltage is less than 0.1 V for more than 1 s.
P0808
The CPP sensor voltage is more than 5.2 V for more than 1 s.
Action Taken When the DTC Sets
DTC P0806 - P0808 are Type A DTCs.
Conditions for Clearing the DTC
DTC P0806 - P0808 are Type A DTCs.
Reference Information
Schematic Reference
Manual Transmission Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Transmission System Description and Operation
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Engine Control Module Scan Tool Information
Circuit/System Verification
| 2. |
Ignition ON, observe the scan
tool CPP Sensor percent parameter. The percentage should vary from
0% when the clutch pedal is released, to 100% when the clutch pedal
is in the apply position. |
| 4. |
Operate the vehicle within the
conditions for running the DTC to verify the DTC does not
reset. |
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector of the B25B Clutch Pedal Position Sensor.
|
| 2. |
Ignition OFF, test for less
than 1 Ω between the low reference circuit terminal A and
ground. |
| ⇒ |
If greater than the specified value, test the low
reference circuit for an open/high resistance. If the circuit tests
normal, replace the K20 Engine Control Module. |
| 3. |
Ignition ON, test for 4.8-5.2
V between the 5V reference circuit terminal C and ground.
|
| ⇒ |
If less than the specified range, test the 5V
reference circuit for a short to ground or an open/high resistance.
If the circuit tests normal, replace the K20 Engine Control
Module. |
| ⇒ |
If greater than the specified range, test the 5V
reference circuit for a short to voltage. If the circuit tests
normal, replace the K20 Engine Control Module. |
| 4. |
Ignition ON, observe the scan
tool CPP sensor voltage parameter for less than 0.1 V. |
| ⇒ |
If greater than the specified value, test the
signal circuit for a short to voltage. If the circuit test normal,
replace the K20 Engine Control Module. |
| 5. |
Install a 3 A fused jumper
wire between the signal circuit terminal B and the 5V reference
circuit terminal C. Verify that the scan tool CPP sensor parameter
is between 4.8-5.2 V. |
| ⇒ |
If not within the specified range, test the signal
circuit for or a short to ground or an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module. |
| 6. |
If all circuits test normal,
test or replace the B25B Clutch Pedal Position Sensor. |
Component Testing
Static Test
| 1. |
Ignition OFF, disconnect the
harness connector of the B25B Clutch Pedal Position Sensor.
|
| 2. |
Measure the resistance between
the signal terminal B and the low reference terminal A of the B25B
Clutch Pedal Position Sensor. Depress the clutch pedal through the
entire range. The resistance should vary from high to low and vice
versa without any spikes or dropouts. |
| ⇒ |
If the resistance is erratic with spikes or
dropouts, replace the B25B Clutch Pedal Position Sensor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
