Volkswagen New Beetle. Manual - part 53

 

  Index      Volkswagen     Volkswagen New Beetle 1998-2008 year - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  51  52  53  54   ..

 

 

Volkswagen New Beetle. Manual - part 53

 

 

Fig. 3: Inspection/Maintenance System Check (2001-2003 GM Vehicles - Except Metro, Prizm, Saturn & 
Tracker)
 
Courtesy of GENERAL MOTORS CORP. 

Inspection/Maintenance (I/M) Complete System Set Procedure 

The step numbers below refer to the step numbers in Fig. 4 on 2001-2003 GM vehicles, except Metro, Prizm, 
Saturn & Tracker.  

1. Ensure you perform INSPECTION/MAINTENANCE (I/M) SYSTEM CHECK before performing this 

test. Failure to do so may result in difficulty updating the status to YES.  

2. This step is to run the HO2S Heater Tests and initiate the EVAP System Test. Preprogramming the scan 

tool will reduce the amount of time the oxygen sensor heaters operate while verifying the enable criteria. 
The Engine Control Module (ECM) considers the engine to be cold if the following conditions are met: 
ECT less than 95°F (35°C), ECT and IAT are within 11°F (6°C) of each other at start up. 

 

1998 Chevrolet Pickup C1500 

DRIVE CYCLES OBD-II Vehicles - OBD-II Readiness Monitors

  

3. This step is to run the EVAP, AIR and the Oxygen Sensor Tests. The EVAP Test begins once the engine 

coolant reaches a calibrated temperature. The AIR Test, if equipped, begins shortly after Closed Loop and 
the indicated speed is achieved. The Oxygen Sensor Tests begin once the engine is at operating 
temperature, in Closed Loop fuel control, and a calibrated amount of time has elapsed.  

4. This step is to run the Exhaust Gas Recirculation (EGR) Tests. The EGR Tests are run during a gradual 

deceleration with a closed throttle. The vehicle speed is required in order to maintain a high, steady 
Manifold Absolute Pressure (MAP) signal.  

5. This step is to run the Catalyst Tests. This test runs during the idle period immediately following a cruise 

period that meets a minimum calibrated RPM and time period.  

6. Perform the individual system test for any of the systems that do not update to YES.  

7. The I/M System Status only reports on whether or not a diagnostic has run, not what the outcome of the 

test was. If any emission related DTC sets after the tests are complete, the DTC will require diagnosis. 
See appropriate SELF DIAGNOSTICS article. 

 

1998 Chevrolet Pickup C1500 

DRIVE CYCLES OBD-II Vehicles - OBD-II Readiness Monitors

  

Fig. 4: Inspection/Maintenance Complete System Set Procedure - 1 Of 2 (2001-2003 GM Vehicles - 
Except Metro, Prizm, Saturn & Tracker)
 
Courtesy of GENERAL MOTORS CORP.

 

1998 Chevrolet Pickup C1500 

DRIVE CYCLES OBD-II Vehicles - OBD-II Readiness Monitors

  

Fig. 5: Inspection/Maintenance Complete System Set Procedure - 2 Of 2 (2001-2003 GM Vehicles - 
Except Metro, Prizm, Saturn & Tracker)

 

1998 Chevrolet Pickup C1500 

DRIVE CYCLES OBD-II Vehicles - OBD-II Readiness Monitors

  

 

 

 

 

 

 

 

Content   ..  51  52  53  54   ..