Captiva |
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| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
BCM B+ Terminal 4 X4 | B3445 00 | B3445 00 | -- | -- |
Brake Pedal Position Sensor 5 V Reference | C0277 06, C0890 03, C0161 71 | C0277 06, C0161 71 | C0277 07, C0161 71 | - |
Brake Applied Signal Terminal 6 X5 | C0297 00, P0571 00 | 3 | 3 | -- |
Brake Pedal Position Sensor Signal | C0277 06, C0161 71 | C0277 06, C0161 71 | C0277 07, C0161 71 | C0277 09 |
Brake Lamp Control | B3445 00 | 1 | 1 | -- |
Brake Position Sensor Low Reference | -- | 1 | 1 | -- |
Center High Mounted Stop Lamp (CHMSL) Ground | -- | 2 | -- | -- |
Left Rear Tail/Stop Lamp Ground | -- | 1 | -- | -- |
Right Rear Tail/Stop Lamp Ground | -- | 1 | -- | -- |
1. Stop Lamps Malfunction 2. Center High Mounted Stop Lamp (CHMSL) Malfunction 3. Cruise Control Malfunction | ||||
The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an analogue voltage signal that will increase as the brake pedal is applied. The body control module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the stop lamp control circuit illuminating the left and right stop lamps and the center high mounted stop lamp (CHMSL). The BCM also applies battery voltage to the transmission control module (TCM) and engine control module (ECM) via the brake applied signal circuit.
| • | Battery voltage must be between 9-16 volts. |
| • | Brakes APPLIED. |
DTC C0277 06 will set for the following conditions:
| • | The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor signal circuit. |
| • | The BCM detects a short to ground or an open/high resistance in the brake pedal position sensor 5-volt reference circuit. |
DTC C0277 07 will set for the following conditions:
| • | The BCM detects a short to battery voltage in the brake pedal position sensor signal circuit. |
| • | The BCM detects a short to battery voltage in the brake pedal position sensor 5 V Reference circuit. |
The BCM detects the brake pedal position sensor signal is changing faster than possible under normal operating conditions.
The brake pedal position sensor home position is not learned.
The BCM detects a short to ground in the brake pedal position sensor voltage reference circuit.
The BCM detects a short to battery voltage in the brake pedal position sensor voltage reference circuits.
| • | The ABS Fault indicator is commanded ON. |
| • | If the DTC sets while the vehicle is running, the BCM will activate the brake lights when the vehicles transmission is not in the PARK position and the vehicle is not accelerating. |
| • | For DTC C0277 4B the stop lamps may not activate at the expected brake pedal positions. |
| • | The condition responsible for setting the DTC no longer exists. |
| • | For DTC C0277 07 the ignition must be cycled before the code can be cleared. |
| • | For DTC C0277 4B a successful brake pedal position sensor calibration has been performed. |
| • | A history DTC will clear once 50 malfunction-free ignition cycles have occurred. |
| • | A DTC will not clear the current status until the next ignition cycle. |
Exterior Lighting Systems Description and Operation
Control Module References for scan tool information
| ⇒ | If the test lamp does not illuminate, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM. |
| • | Terminal 3 (MN6) |
| • | Terminal 2 (MX0) |
| ⇒ | If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM. |
| ⇒ | If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM. |
| ⇒ | If greater than the specified range, test the signal circuit terminals listed below for a short to voltage. If the circuit tests normal, replace the K9 BCM. |
| • | Terminal 2 (MN6) |
| • | Terminal 3 (MX0) |
| ⇒ | If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM. |
| ⇒ | If the DTC resets, replace the K9 BCM. |
| ⇒ | If the DTC resets, replace the B22 brake pedal position sensor. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, setup, and programming |
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