DTC B1382
CIRCUIT DESCRIPTION
The body control module (BCM) receives accessory voltage from the ignition switch through the BCM fuse when the ignition switch is in the accessory or run position.
CONDITIONS FOR RUNNING THE DTC
* The engine is running or the ignition 1 input is active for at least 30 seconds .
* Voltage supplied to the BCM is in the normal operating range, approximately 9-16 volts .
CONDITIONS FOR CLEARING THE DTC
* A current DTC B1382 clears when the code setting condition is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.
ACTION TAKEN WHEN THE DTC SETS
DTC B1382 is stored in the BCM memory.
CONDITIONS FOR SETTING THE DTC
The BCM does not detect the accessory input after 30 seconds .
DTC B2602
CIRCUIT DESCRIPTION
The daytime running lights (DRL) relay is controlled by the body control module (BCM). Battery positive voltage is applied to the relay coil at all times. The BCM grounds the DRL relay control circuit in order to turn ON the DRL relay. When the DRL relay control circuit becomes shorted to ground without being commanded on by the BCM, DTC B2602 is set.
CONDITIONS FOR RUNNING THE DTC
* The ignition switch is in the ON position
* The transaxle is in the park position.
CONDITIONS FOR SETTING THE DTC
All of the following conditions must be met:
* The BCM is not commanding the DRL relay on.
* The headlamp feedback is present for 5 seconds .
ACTION TAKEN WHEN THE DTC SETS
* The BCM disables the DRL relay control as long as the malfunction is present.
* The SERVICE indicator illuminates.
CONDITIONS FOR CLEARING THE DTC
* The conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction free ignition cycles.
* The BCM receives the clear code command from the scan tool.
DIAGNOSTIC AIDS
* If DTC B2601 is set along with DTC B2602, test the DRL relay control circuit between the BCM and the DRL relay for a short to ground.
* The park brake must be unapplied and the transaxle must be in gear for the DRLs to operate properly.
* If the DTC is a history DTC, the problem may be intermittent
DTC B0005
Circuit Description
The park brake switch monitors if the park brake is engaged. When the BCM sees the park brake switch input grounded, it sends a serial data message to the IPC requesting illumination of the red Brake indicator.
Conditions for Running the DTC The vehicle speed is greater than 8 km/h (5 mph) .
Conditions for Setting the DTC
The BCM detects a ground on the park brake switch signal circuit for longer than 2 seconds.
Action Taken When the DTC Sets
The audible warning sounds until the vehicle speed is reduced or the park brake switch is released.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
DTC B2662
CIRCUIT DESCRIPTION
The park lamps are controlled by the turn/headlamp switch. Positive battery voltage is supplied to the switch through the EXT LP fuse. When the turn/headlamp switch is placed in the park or head position, battery voltage is supplied to the park lamps. The body control module is also connected to the park lamp circuit to sense whether or not the park lamps turn on when the lowbeam or highbeam headlamps are turned on. The BCM also uses the parklamp battery positive voltage to power the instrument panel dimmer output circuit. If the BCM senses that the lowbeam or highbeam headlamps are on and the park lamp input is not active, DTC B2662 sets.
CONDITIONS FOR RUNNING THE DTC
* The ignition switch is in the ON position.
* The lowbeam or highbeam headlamps are on.
CONDITIONS FOR SETTING THE DTC
The park lamp input is inactive for 1 second .
ACTION TAKEN WHEN THE DTC SETS
DTC B2662 is stored in the BCM memory.
CONDITIONS FOR CLEARING THE DTC
* The conditions for setting the DTC are no longer present.
* A history DTC clears after 100 malfunction free ignition cycles.
* The BCM receives the clear code command from the scan tool.
DTC B2958
CIRCUIT DESCRIPTION
The Passlock(TM) system is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. The body control module (BCM) provides security system sensor power and low reference for the Passlock(TM) sensor. The BCM also measures the security system sensor voltage.
When the correct key is used to start the vehicle, a magnet on the lock cylinder passes close to the Passlock(TM) sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock(TM) sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle. The BCM will measure the voltage on the security sensor signal circuit and compare this voltage to a previously learned voltage. If the voltage measured is within the valid range, the BCM will send a class 2 message to the powertrain control module (PCM) to enable vehicle starting. If the voltage measured is not within the valid range, a class 2 message will be sent to the PCM to disable starting of the vehicle.
CONDITIONS FOR SETTING THE DTC
* The ignition switch is ON.
* The BCM signal input is greater than 4.9 volts for 1 second after turning the ignition switch to the CRANK position.
ACTION TAKEN WHEN THE DTC SETS
* The DTC will set only when the engine is running
* The BCM will be in the fail enable mode allowing the vehicle to start and run.
* The security indicator will be ON.
CONDITIONS FOR CLEARING THE DTC
* The current DTC will clear once an ignition cycle has occurred without the fault recurring.
* After 100 concurrent ignition cycles occur without the fault recurring, a history DTC clears.
* Using a scan tool.
DTC U1000
CIRCUIT DESCRIPTION
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the ID number of the module which sent the message for State of Health monitoring, Node Alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an ID number with at least one critical parameter within about 5.5 seconds of beginning serial data communication, DTC U1000 or U1255 is set. When more than one critical parameter does not have an ID number associated with it, the DTC will only be reported once.
DTC P0455
SYSTEM DESCRIPTION
The control module tests the evaporative emission (EVAP) system for a large leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the EVAP system vacuum level. When the conditions for running are met, the control module commands the EVAP canister purge solenoid valve OPEN and the EVAP canister vent solenoid valve CLOSED. This allows engine vacuum to enter the EVAP system. At a calibrated time, or vacuum level, the control module commands the EVAP canister purge solenoid valve closed, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum level. If the system is unable to achieve the calibrated vacuum level, or the vacuum level decreases too rapidly, this DTC sets.
CONDITIONS FOR RUNNING THE DTC
* DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0122, P0123, P0125, P0452, P0453 are not set.
* The engine is running.
* The ignition voltage is between 10-18 volts .
* The barometric pressure (BARO) is more than 75 kPa .
* The fuel level is between 15-85 percent .
* The engine coolant temperature (ECT) is between 4-30°C (39-86°F) .
* The intake air temperature (IAT) is between 4-30°C (39-86°F) .
* The start-up ECT and AT are within 9°C (16°F) of each other.
* The vehicle speed sensor (VSS) is less than 121 km/h (75 mph) .
CONDITIONS FOR SETTING THE DTC
The EVAP system is not able to achieve or maintain vacuum during the diagnostic test.
ACTION TAKEN WHEN THE DTC SETS
* The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
* The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
* The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
* A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
* A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
* Clear the MIL and the DTC with a scan tool.
DIAGNOSTIC AIDS
* To help locate intermittent leaks, use the J 41413-200 Evaporative Emissions System Tester (EEST) to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the J41413-SPT High Intensity White Light.
* A temporary blockage in the EVAP purge solenoid valve, purge pipe or EVAP canister could cause an intermittent condition. Inspect and repair any restriction in the EVAP system.
* To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT.
* Reviewing the Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.
* A loose, missing, incorrect, or damaged fuel fill cap may cause this DTC to set.
