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Home >> Volkswagen >> 2004 >> Passat Wagon (3B6) L4-2.0L DSL Turbo (BHW) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> With Generic Scan Tool >> Diagnostic Mode 6: Check Test Of Parts Not Constantly Monitored

Diagnostic Mode 6: Check Test Of Parts Not Constantly Monitored



Diagnostic Mode 6: Check Test Results Of Components That Are Not Continuously Monitored

NOTE: This diagnostic mode can only be selected with Module number 10 - Engine Electronics.

Function
This diagnostic mode displays test results of emission relevant components and systems which are not continuously monitored.

The values of individual test results must reach the specified value or must be within min.- and max.- limits.

Test-ID Component, System
01: Heated Oxygen Sensor (HO2S) -G39-
09: Engine Coolant Temperature (ECT) Sensor -G62-
11: Fuel Temperature Sensor -G81-
12: Charge Air Pressure Sensor -G31-
31: Exhaust Gas Recirculation (EGR)

Test-ID 01: Heated Oxygen Sensor (HO2S) -G39-

Requirements
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.
- Coolant temperature must be at least 80 degrees C, Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values

Work procedure
- Read readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
- Let engine run at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Test-ID 01: Heated Oxygen Sensor (HO2S) -G39-".
- Perform a road test.

Observe the safety precautions that apply to road tests.

The following operating conditions must be met during this road test:
- Drive for 20 seconds in 4th gear or in driving mode "D" on a level driving surface at a constant vehicle speed with an engine speed of 1700 to 1900 RPM. After that, at a vehicle speed of 100 km/h, remove foot from accelerator pedal and into deceleration mode to 900 RPM.
- Check specified values.

Evaluation test-ID 01 Heated Oxygen Sensor (HO2S) -G39-







- End diagnosis and switch ignition off.

If specified values are not obtained:
- Oxygen sensor and oxygen sensor control, checking. Oxygen Sensor and Oxygen Sensor Control, Checking
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Test-ID 09: Engine Coolant Temperature (ECT) Sensor -G62-

Requirements
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.
- Coolant temperature must not be above the maximum of 20 degrees C, Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values

Work procedure
- Read readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
- Let engine run at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Test-ID 09: Engine Coolant Temperature (ECT) Sensor -G62-".
- Increase engine speed to approx. 1800 RPM.
- Check specified values.

Evaluation of Test-ID 09 Engine Coolant Temperature (ECT) Sensor -G62-







- End diagnosis and switch ignition off.

If specified values are not obtained:
- Check Engine Coolant Temperature (ECT) Sensor -G62-. Engine Coolant Temperature (ECT) Sensor, Checking
- Check coolant regulator in coolant regulator housing:
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Test-ID 11: Fuel Temperature Sensor -G81-

Requirement
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.

Work procedure
- Read readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
- Let engine run at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select the "Test-ID 11: Fuel Temperature Sensor -G81-".
- Check specified values.

Evaluation of Test-ID 11 Fuel Temperature Sensor -G81-







- End diagnosis and switch ignition off.

If specified values are not obtained:
- Check Fuel Temperature Sensor -G81-. Fuel Temperature Sensor, Checking
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Test-ID 12: Charge Air Pressure Sensor -G31-

Requirement
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.

Work procedure
- Read readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
- Switch ignition on.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Test-ID 12: Charge Air Pressure Sensor -G31-".
- Check specified values with ignition switched on.

Evaluation of Test-ID 12 Charge Air Pressure Sensor -G31-







- End diagnosis and switch ignition off.

If specified values are not obtained:
- Check Charge Air Pressure Sensor -G31-. Charge Air Pressure Sensor, Checking
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

Test-ID 31: Exhaust Gas Recirculation (EGR)

Requirement
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.

Work procedure
- Read readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
- Let engine run at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Test-ID 31: Exhaust Gas Recirculation (EGR)".
- Perform a road test.

Observe the safety precautions that apply to road tests.

The following operating conditions must be met during this road test:
- Drive for 20 seconds in driving mode "D" on a level driving surface at a constant vehicle speed with an engine speed of 1700 to 1900 RPM.
- Check specified values.

Evaluation test-ID 31 Exhaust Gas Recirculation (EGR)







- End diagnosis and switch ignition off.

If specified values are not obtained:
- Perform basic setting of EGR Vacuum Regulator Solenoid Valve -N18-.
- Check EGR Vacuum Regulator Solenoid Valve -N18-. EGR Vacuum Regulator Solenoid Valve, Checking
- Check Potentiometer for EGR -G212-. Potentiometer For EGR, Checking
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
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