DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected

Download DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected Refer to Engine Controls Routing Diagram, EVAP Control System Overview . System Description This DTC tests the evaporative emission (EVAP) system for a small leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the vacuum decay rate. At an appropriate time, the control module turns the EVAP canister purge valve ON and the EVAP vent valve ON. This allows the engine to draw a vacuum on the EVAP system. At a calibrated time, or vacuum level, the control module turns the EVAP canister purge valve OFF, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum decay. If the control module detects a leak larger than a calibrated amount, this DTC sets. The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent valves.… Read More

2002 Saturn SL DTC P0122

Download The throttle position (TP) sensor is a potentiometer that varies resistance according to changes in throttle plate position. The powertrain control module (PCM) measures the signal voltage from the TP sensor which is a reduced value of the PCM 5-volt reference. The voltage ranges from 0.4 (+/-0.2) volts at 0% throttle position to 4.7 volts at wide open throttle. DTC P0122 sets when the TP sensor signal voltage at the PCM is below the calibrated voltage value. DTC Parameters DTC P0122 will set if TP sensor voltage is less than 0.2 volts when: z The condition exists for longer than 10 seconds. z The ignition is ON. DTC P0122 diagnostic runs continuously with ignition ON. DTC P0122 is a type A DTC. Diagnostic Aids Important If DTC P1635 is set, diagnose that DTC first. 2002 Saturn SL
To locate an intermittent problem, use a scan tool to monitor TP SENSOR voltage with ignition ON, engine OFF.… Read More

2000 Cadillac DeVille Brake Switch Circuit Low Input

Download . Circuit Description The torque converter clutch (TCC) brake switch is used to indicate the status of the brake pedal (applied or released). If the PCM detects an open TCC brake switch (stuck ON) during accelerations, then DTC P0719 sets. DTC P0719 is a type C DTC. Conditions for Running the DTC * No VSS DTCs P0502 or P0503. * DTC P0719 has not passed this ignition cycle. Conditions for Setting the DTC The TCC brake switch input is at 0 volts for 15 minutes and the following conditions occur 8 times without a status change on the TCC brake input: * The vehicle speed is less than 8 km/h (5 mph). * The vehicle accelerates to 32 km/h (20 mph) within 2-6 seconds. * Then the vehicle speed remains above 32 km/h (20 mph) for 6 seconds. Action Taken When the DTC Sets * The PCM does not illuminate the malfunction indicator lamp (MIL).… Read More

2003 Cadillac Escalade Code C0660 will reset.

Download Vehicle Application: 2003 Cadillac Escalade 5.3L, Vin T, USA/Canada 2005 Chevrolet Suburban 1500 LS 5.3L, GAS, Vin T 2003 Cadillac Escalade EXT 6.0L 2005 GMC Yukon XL 1500 Slt 5.3L, FLEX, Vin Z 2005 Chevrolet Suburban 1500 LS 5.3L, FLEX, Vin Z Customer Concern: Code C0660 will reset. Tests/Procedures: 1. Check the RTD fuse located in the underhood fuse block. 2. Check for Battery Voltage (B+) on the Orange wire at the automatic level control air compressor pin F. 3. If less than B+ at pin F, check for a wiring and connection problem between the air compressor and the underhood fuse block. 4. Disconnect the compressor leveling module connector and check the resistance from the positive battery voltage circuit of the exhaust solenoid valve and the control circuit of the exhaust solenoid valve. Should be 30-90 ohms. 5. Check for B+ on the Dark Blue wire pin B at the air compressor with the exhaust solenoid commanded off.… Read More

2001 Lexus GS 300 Reading Diagnostic Trouble Codes

Download NOTE: This is the only information provided by the manufacturer for reading diagnostic trouble codes for this system. If compressor lock occurs during A/C operation, the A/C switch indicator on the A/C control assembly starts blinking. When this occurs, check for compressor lock (DTC B1422) using diagnosis trouble code check then proceed to inspect the circuit or the component. Compressor lock sensor circuit. (See DTC B1422 Compressor Lock Sensor Circuit) By operating each of the A/C control switches as shown in the diagram, it is possible to enter the diagnosis check mode. a. Turn the ignition switch on while pressing the A/C control AUTO switch and R/F SW simultaneously. b. Check that all the indicators light up and go off at 1 second intervals 4 times in succession. a. Perform an indicator check. After the indicator check is completed, the system enters the DTC check mode automatically. b. Read the DTC displayed on the panel.… Read More

2003 HONDA PILOT DTC Troubleshooting

Download P0505 (14) DTC P0505: Idle Control System Malfunction NOTE: If DTC P1519 is stored at same time as DTC P0505, troubleshoot DTC P1519 first, then recheck for DTC P0505. 1. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on. 2. Check the engine speed at idle with no-load conditions: headlights, blower fan, rear window defogger, radiator fan, and air conditioner off. Is the engine running at 730+/-50 rpm? 3. Disconnect the idle air control (IAC) valve 3P connector. Does the engine speed increase or fluctuate? 4. Turn the ignition switch OFF. 5. Remove the intake air duct from the throttle body. 6. Start the engine and let it idle. 7. Put your finger on the lower port (A) in the throttle body. Does the engine speed drop below 780 rpm? YES – Intermittent failure, system is OK at this time.?… Read More

2000 Ford Pickup F250 Super Duty EXHAUST BACKPRESSURE (EBP) SENSOR

Download SELF-DIAGNOSTICS – EEC-V (DIESEL) -2000 Ford Pickup F250 Super Duty EXHAUST BACKPRESSURE (EBP) SENSOR. Perform this test when directed by QUICK TEST. This test is intended to diagnose: Exhaust Backpressure (EBP) Sensor • Wiring Harness Circuits (SIG RTN, VREF & EBP Signal) • Powertrain Control Module (PCM) • 1) DTC P0470 This DTC indicates PCM detected EBP sensor malfunction during KOEO ON-DEMAND SELF-TEST. Possible causes for this DTC are: Faulty EBP Sensor • Open Or Shorted Circuit • Faulty PCM • Ensure scan tool is connected to Data Link Connector (DLC). Using scan tool, select EBP PID from PID/DATA monitor menu. If EBP reading is less than 18.5 psi, clear DTCs. Repeat KOEO ON-DEMAND SELF-TEST . If DTC is still present, replace PCM. If EBP reading is 18.5 psi or more, go to next step. 2) Check Signal Ground Circuit Turn ignition off. Disconnect EBP sensor connector. Sensor is located on top front of engine.… Read More

2000-2002 Infiniti G20 MIL “ON” REAR O2 SENSOR DTC P0138/P0139/P0140

Download If a 2000 to 2002 G20 has a MIL “On” and any of the following DTCs stored in the ECM: • P0138 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Max. Voltage Monitoring) • P0139 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Response Monitoring) • P0140 Heated Oxygen Sensor 2 (Rear) (Bank 1) (High Voltage) Start with the Service Procedure to find out if the bulletin applies to this vehicle. If it does apply, complete the Service Procedure to repair the incident, if it should occur. SERVICE PROCEDURE You will be performing the following, as required: • Determine the DTC Stored in ECM from the CONSULT-II Self-diagnosis results. • ECM Part Number Check to determine if this bulletin applies. • ECM Reprogramming (required if the ECM P/N in the vehicle matches one of those listed under “Current ECM P/N” in Chart A -page 2). • Replacing the Rear Oxygen Sensor (required if ECM Reprogramming is needed).… Read More

1999-2001 Infiniti Q45 (FY33) MIL “ON” REAR O2 SENSOR DTC

Download 1999-2001 Q45 (FY33) SERVICE INFORMATION If a 1999, 2000, or 2001 Q45 has a MIL “On” and any of the following DTCs stored in the ECM: • P0138 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Max. Voltage Monitoring) • P0139 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Response Monitoring) • P0140 Heated Oxygen Sensor 2 (Rear) (Bank 1) (High Voltage) • P0158 Heated Oxygen Sensor 2 (Rear) (Bank 2) (Max. Voltage Monitoring) • P0159 Heated Oxygen Sensor 2 (Rear) (Bank 2) (Response Monitoring) • P0160 Heated Oxygen Sensor 2 (Rear) (Bank 2) (High Voltage) Start with the Service Procedure to find out if the bulletin applies to this vehicle. If it does apply, complete the Service Procedure to repair the incident, if it should occur. SERVICE PROCEDURE You will be performing the following, as required: • Determine the DTC Stored in ECM from the CONSULT-II Self-diagnosis results. • ECM Part Number Check to determine if this bulletin applies.… Read More

1995 Oldsmobile Cutlass Supreme DTC 77

Download Direct-Hit 1995 Oldsmobile Cutlass Supreme 3.1L Test Details Hotline Archive # 97688 Confirmed Fix Vehicle Application: 1993 Chevrolet Camaro 3.4L 1995 Chevrolet Camaro 3.4L, Vin S 1994 Buick Skylark Custom 3.1L, Vin M, Eng Cfg V6 1995 Chevrolet Lumina 3.1L 1994 Chevrolet Corsica 3.1L, Vin M, Eng Cfg V6 1995 Pontiac Grand AM SE 3.1L, Vin M, Eng Cfg V6 1994 Oldsmobile Cutlass Supreme S 3.1L, Vin M 1995 Pontiac Grand Prix SE 3.1L Customer Concern: DTC 77. Tests/Procedures: 1. Remove the throttle body, and inspect the Exhaust Gas Recirculation Valve (EGR) port in the intake plenum. 2. The passage plugs at the bottom where it dumps into the plenum. 3. Best to use an old speedometer cable in a drill to run inside the passage to knock all the carbon out. Potential Causes: Restricted Exhaust Gas Recirculation (EGR) Passages Tech Tips: When an EGR solenoid is activated by the Powertrain Control Module (PCM), the PCM monitors the change in the Manifold Absolute Pressure (MAP) reading.… Read More