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Home >> Volkswagen >> 2002 >> Jetta GL Sedan (9M2) L4-2.0L (AZG) >> 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

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

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

Test-ID Components
01: Catalytic converter
03: Secondary Air Injection (AIR) system
05: Tank ventilation system
09: Engine Coolant Temperature (ECT) Sensor -G62-
Vehicles with engine code AVH, AZG

Test-ID 01: Catalytic converter

Test 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°C, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measured Values

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 01: Catalytic converter".
- Check specified values at idle.

Evaluation test-ID 01: Catalytic converter





- End diagnosis and switch ignition off.

If specified values are not obtained:
- Replace the front exhaust pipe with catalytic converter.

Continuation for all vehicles
- 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 03: Secondary Air Injection (AIR) system

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

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 03: Secondary Air Injection (AIR) system"
- Check specified values at idle.

Evaluation test-ID 03: Secondary Air Injection (AIR) system





- End diagnosis and switch ignition off.

If the specified values are not reached:
- Check secondary air system for proper seal. Secondary Air Injection (AIR) System, Checking For Proper Seal
- Check Secondary Air Injection (AIR) Pump Motor -V101-. Secondary Air Injection (AIR) Pump Motor, Checking

Continuation for all vehicles
- 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 05: Tank ventilation system

Test 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 80 to 110°C, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measured Values

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 05: Tank ventilation system".
- Check specified values at idle.

Evaluation test-ID 05: Tank ventilation system








If the specified values are exceeded:
- EVAP canister system, checking for proper seal. Evaporative Emission (EVAP) Canister System, Checking For Proper Seal
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Evaporative Emission (EVAP) Canister Purge Regulator Valve, Checking
- Leak Detection Pump (LDP) -V144-, checking. Leak Detection Pump (LDP), 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- (Vehicles with engine code AVH, AZG)

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

Procedure
- Connect diagnostic tester. Diagnostic Tester, Connecting
- Perform a road test until a coolant temperature of 80 to 100°C has been reached, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measured Values

Observe the safety precautions that apply to road tests.

- Switch ignition off.
- Start engine at a coolant temperature of 80 to 90°C and let it run at idle.
- Perform a road test anew.

The following operating conditions must be met during this road test:
- Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).
- Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.

- 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 09: Engine Coolant Temperature (ECT) sensor".
- Check specified values at idle.

Evaluation test-ID 09:





- End diagnosis and switch ignition off.

If specified value is not obtained:
- Check Engine Coolant Temperature (ECT) Sensor -G62-. Engine Coolant Temperature (ECT) Sensor, Checking

- Check coolant regulator.
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