LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 2004 >> Axiom Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Information & Procedures >> Symptom Diagnosis >> Bank 1 Restricted Exhaust System Check

Bank 1 Restricted Exhaust System Check

BANK 1 RESTRICTED EXHAUST SYSTEM CHECK

Step Action Values Yes No
NOTE: DTCs will be set by running The vehicle to normal operating temperature after a cold start with the O2 sensor disconnected. After performing these tests, use the Tech 2 to erase the all DTCs that were set by the lack of O2 sensor activity.
1 Was the "On-Board Diagnostic (OBDII) System Check" performed? - Go to Step 2 Go to On-Board Diagnostic (OBD-II) System Check
2
  1. Remove the Bank 1 HO2S 2.
  2. Install the Exhaust Backpressure Tester (BT-8515-V or equivalent) in place of the Bank 1 HO2S 2.
  3. Run the engine at normal operating temperature.
  4. Increase the engine speed to 2000 RPM and allow 10 seconds for pressure to build.
  5. Observe the exhaust system backpressure reading on the gauge.
Does the reading exceed the amount in the value column?		 8.62 kPa (1.25 psi) Go to Step 3 Go to Step 4
3 Repair the restriction in the exhaust system after the catalytic converter.
  1. Possible faults include:
  2. Collapsed pipe
  3. Heat distress
  4. Internal muffler failure

Is the action complete?		 - Verify repair -
4
  1. Install the Bank 1 HO2S 2.
  2. Install the Exhaust Backpressure Tester in place of Bank 1 HO2S 1.
  3. Run the engine at normal operating temperature.
  4. Increase the engine speed to 2000 RPM and allow 10 seconds for pressure to build.
  5. Observe the exhaust system backpressure reading on the gauge.
Does the reading exceed the amount in the value column?		 8.62 kPa (1.25 psi) Go to Step 5 No trouble found. If a driveability symptom exists, refer to symptom charts
5 Repair the restriction in the catalytic converter.
Is the action complete?		 - Verify repair -
scientia non olet · About LEMON Manuals