Diesel models 463.333 (M628)
Installation details of the coolant temperature sensor of the CDI control system of the M628 engine (1 of 2)
1, 5, 5a - Bolts; 2 - Air duct; 6 - Lid; 14 - Left air intake duct; 15 - Right air intake duct; 16 - Left cylinder head trim panel; 17 - Right cylinder head trim panel; B28 - Pressure sensor; N14/2 - Pre-glow system output voltage block; N14/2x1, N14/2x2 - Output voltage connection connectors
Installation details of the coolant temperature sensor of the CDI control system of the M628 engine (2 of 2)
7 - Vacuum line; 8 - Vacuum pump; 9 - Locking tabs; 10 - Fixators; 11 - Bolt; 12 - Cable sleeve; 13 - Guide pins; 14 - Fastening clamp; B11/4 - Coolant temperature sensor
1. Remove the air cleaner (see Section Servicing air intake tract components).
2. Remove the right air intake with the MAF sensor (B2/7) (see Section Servicing air intake tract components).
3. Release the air duct (15) from the clips in the wheel arch.
4. Remove the right cylinder head trim panel (17).
5. Unscrew the bolt (1) and move the air duct (2) to the side.
6. Unscrew the bolt (5a) and remove the cover (6).
7. Disconnect the electrical wiring from the pressure sensor (B28).
8. Disconnect the connectors (N14/2x1 and N14/2x2) on the output voltage block of the preheating system (N14/2).
9. By squeezing the locking tabs (9), disconnect the line (7) from the vacuum pump (8).
10. Release the clamps (10) and move the vacuum line (7) to the side.
11. Remove the bolt (11).
12. Remove the cable sleeve (12) from the guide pins (13) and open it to provide access to the coolant temperature sensor wiring connector (B11/4).
13. Using a screwdriver, press the clamp (14) and remove the coolant temperature sensor (B11/4) - prepare to collect any spilled liquid.
14. Installation is carried out in the reverse order - do not forget to replace the sealing elements.
15. Finally, clear the memory of the on-board diagnostic system processor (see Chapter Engine electrical systems).