P132B results
</TD><TD align=right>SECTION 5: Pinpoint Tests
</TD></TR><TR><TD></TD><TD align=right>Procedure revision date: 06/15/2009
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<HR><TABLE cellSpacing=0 width="95%"><TBODY><TR><TD>KA: Turbo Charger System Performance
</TD><TD width="25%" align=right>
KA: Introduction </TD></TR></TBODY></TABLE><HR>
KA1 PRELIMINARY DIAGNOSIS
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">For DTC P132B, P2262 or P2263, GO to KA2 .
For all other DTCs, REFER to Section 4 Diagnostic Trouble Code (DTC) Descriptions. </TD><TD width="50%">GO to KA2 . </TD></TR></TBODY></TABLE>
KA2 CHECK THE MANIFOLD ABSOLUTE PRESSURE (MAP) AND BAROMETRIC PRESSURE (BARO) SIGNAL ACCURACY
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">GO to KA3 . </TD><TD width="50%">GO to Pinpoint Test E . </TD></TR></TBODY></TABLE>
KA3 CHECK FOR INPUT SENSOR BIAS
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">GO to KA4 . </TD><TD width="50%">REFER to the appropriate pinpoint test to continue sensor diagnostics. </TD></TR></TBODY></TABLE>
KA4 CHECK THE TURBOCHARGER OPERATION BOOST
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">GO to KA5 . </TD><TD width="50%">GO to KA6 . </TD></TR></TBODY></TABLE>
KA5 CHECK THE TURBOCHARGER OPERATION BACK PRESSURE
- Key ON, engine running.
- Using the gauge bar, access the exhaust pressure sensor port.
- Access the PCM and monitor the, EGR DC, RPM and VGTDC PIDs.
- Access the PCM and control the EGR DC, RPM, and VGTDC PIDs.
- Increase the commanded engine speed to 1,200 RPM using output state control. The calibration may limit the actual RPM between 1,150 and 1,200 RPM.
- Decrease the EGR duty cycle (EGR DC) to 0%.
- Decrease the VGT duty cycle (VGTDC) to 0%.
- Record the exhaust pressure from the gauge bar.
- Increase the VGT duty cycle to 85%.
- Record the exhaust pressure from the gauge bar.
- Decrease the VGT duty cycle to 0%.
- Record the exhaust pressure from the gauge bar.
<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">GO to KA7 . </TD><TD width="50%">GO to KA6 . </TD></TR></TBODY></TABLE>
KA6 CHECK THE CHARGE AIR COOLER, AIR INTAKE AND EXHAUST SYSTEMS FOR LEAKS
- Key in OFF position.
- Disconnect the exhaust pressure (EP) sensor from the tube.
- Connect the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 (522) or equivalent to the EP sensor tube.
- Fill the exhaust system with smoke until smoke is present at the exhaust pipe.
- Plug the exhaust pipe.
- Pressurize the exhaust system with 20 psi regulated air.
- Disconnect the hose from the MAP sensor.
- Inspect the MAP sensor hose and manifolds for damage, leaks, restrictions, and correct routing.
- Connect the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 (522) or equivalent to the MAP hose.
- Fill the air intake system with smoke.
- Plug the air filter box.
- Pressurize the air intake system with 20 psi regulated air.
- Check the air intake and exhaust systems for leaks.
<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">REPAIR the leaks. REFER to Section 4, Performance Diagnostic Procedures if a driveability concern exists.
CLEAR the DTCs. REPEAT the self-test. </TD><TD width="50%">GO to KA8 . </TD></TR></TBODY></TABLE>
KA7 CHECK THE VGT ACTUATOR STABILITY
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">The turbocharger system is operating correctly. REFER to Section 4, Performance Diagnostic Procedures.
CLEAR the DTCs. REPEAT the self-test. </TD><TD width="50%">GO to AK7 . </TD></TR></TBODY></TABLE>
KA8 CHECK THE OPERATION OF THE VGT ACTUATOR
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<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">GO to KA9 . </TD><TD width="50%">GO to AK2 . </TD></TR></TBODY></TABLE>
KA9 CHECK THE VGT VANE OPERATION
- Key in OFF position.
- Install the VGT actuator in the turbocharger assembly.
- Remove the pipe plug from the top of the VGT actuator housing, located near the oil supply tube.
- Apply an index mark on the internal valve cam follower (tip of the actuator).
- Key ON, engine running.
- Access the PCM and control the VGTDC PID.
- Increase the VGT duty cycle from 20% to 85%.
- Check the internal valve cam follower for movement at each step while increasing the duty cycle.
<TABLE border=1 cellSpacing=0 cellPadding=3 width="92%"><TBODY><TR><TH width="50%">Yes </TH><TH width="50%">No </TH></TR><TR><TD width="50%">The turbocharger system is operating correctly. REFER to Section 4, Performance Diagnostic Procedures.
CLEAR the DTCs. REPEAT the self-test. </TD><TD width="50%">CARRY OUT the Turbocharger Reconditioning General Procedure. REFER to the Workshop Manual Section 303-04D Fuel Charging and Controls — Turbocharger. </TD></TR></TBODY></TABLE>
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