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Home >> Lexus >> 2007 >> GS 350 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - DTC P0136 - P0604 >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2) >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT:

Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.

Fig 1: Vehicle Speed Graph
G05285177Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Intelligent Tester Display - READINESS TESTS
G04828152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the intelligent tester to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the tester ON.
  4. Clear DTCs (if set) (see DTC CHECK / CLEAR ).
  5. Enter the following menus: DIAGNOSIS / CARB OBD II / READINESS TESTS.
  6. Check that CAT EVAL is INCMPL (incomplete).
  7. Start the engine and warm it up.
  8. Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
  9. Note the state of the Readiness Tests items. Those items will change to COMPL (complete) as CAT EVAL monitor operates.
  10. On the tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES; then check if any DTCs (any pending DTCs) are set.

HINT:

If CAT EVAL does not change to COMPL, and any pending DTCs fail to set, extend the driving time.