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B-22, Intake-Air System
Test
Work Order Description
T01
Preliminary Diagnostic Check (Visual Inspection)
• Verify mechanical system functions/components
Intake system
• Check intake system/charge air hoses for leaks (secondary air,
porosity and blockages)
• Check the hose clamps at the intake-air system/charge-air system
for correct fitting.
• Check connected hoses and tubes for kinks, damage etc.
• Check air filter for fouling and correct mounting.
• Check mass air flow sensor for fouling.
• Verify mechanical system functions/components
Exhaust-gas turbo charger
Exhaust system
Yes: T02
T02
Check: Fault Location
The following test steps must be performed in the given order. If a
fault is found in one test step, the subsequent test steps can be
skipped.
• Perform quick check data list:
Refer to Table B-02 Data List "T13" MAF/MAF Sensor Voltage
• Perform quick check actuator test:
Refer to Table B-04 Actuator Test "T02" EGR Solenoid Test
• Perform quick check data list:
Refer to Table B-02 Data List "T15" Turbo Pressure/Turbo Pres-
sure Voltage
• After successful test/fault repair proceed to the next test step
Yes: –
ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z13DT ENGINE) 6-3-49
Nominal Value
Test okay?
No: C-41
No: –
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