Glow Plug System, Checking
Fig 1: Identifying Component Location Of Secondary Air Injection (Air) Pump Relay J299, New Version Of Relay Carrier
1 - Automatic glow time control module -J179-
The pre-glow system is controlled by the automatic glow time control module. The automatic glow time control module is On Board Diagnostic (OBD) capable.
If there is a malfunction in the preglow system, a fault will be stored in the Engine Control Module (ECM).
Checking the preglow system is explained in "Guided Fault Finding".
Electronically controlled glow plugs with a separate glow plug control module was installed in order to reach a quick starting function.
Each glow plug is controlled and diagnosed individually.