EGR Temperature Sensor: Service and Repair

Component Notes And Information

NOTE:
^ During service procedures, refer to the illustration above and the information below.
^ Function/control of the EGR system is checked via Motronic On Board Diagnostic system.
^ Components marked with an * are checked via On Board Diagnostic
^ Components marked with ** are checked via Output Diagnostic Test Mode
^ Always replace sealing rings and gaskets when assembling
^ Vacuum lines and hose connections must be leak-tight
^ Vacuum lines must not be blocked or kinked

1 Connection
- Between intake manifold and Throttle Valve Control Module J338
2 Intake manifold
3 2-pin harness connector
- Brown
- For EGR valve N18
4 Junction piece
5 Vacuum line
- From Positive Crankcase Ventilation valve
6 Exhaust Gas Recirculation valve -N18-*/**
- Two-way valve
- Checking, refer to OBD II Testing and Inspection
7 Connecting hose
8 Bolt
- Tighten to: 10 Nm (7 ft lb)
9 Air Cleaner
- Can cause engine running problems if dirty
10 Gasket
- Always replace
11 Connection from connection on exhaust manifold
- For Exhaust gas inlet, refer to Exhaust System
12 Fitting Nut
- Tighten to: 30 Nm (22 ft lb)
13 Pipe
- For exhaust gas intake
14 Connection
- Tighten to: 35 Nm (26 ft lb)
15 EGR valve
- Checking. Testing and Inspection
16 2-pin harness connector
- Black
- For exhaust gas recirculation temperature sensor G98
17 EGR temperature sensor -G98-*
- Tighten to: 20 Nm (15 ft lb)