COMMON RAIL SYSTEM
V3800-CR-TE4,V3800-CR-TIE4, DM
1-S17
3. ACTIVE TEST AND SUPPLY PUMP DIFFERENCE
LEARNING
The four items below are used (including the supply pump difference learning).
9Y1200192CRS0018US0
(Operating conditions
→
specified tool conditions)
1. The conditions below are required for 1. Injector non-injection instruction and 4. Supply pump difference learning:
• Machine is stopped (KWPSPD = 0)
• Neutral switch is ON (XNEU = 1 or ON)
9Y1200192CRS0019US0
[Operation details]
1. Injector non-injection instruction
• Stop the injection for each cylinder injector in accordance with the requests from the tool.
NOTE
• Do not judge with the corresponding cylinder only: also compare with the symptoms in the other
cylinders.
2. EGR actuation test
• Operate as shown in the diagram below and in accordance with the requests from the tool.
NOTE
• In some cases the actual opening may be different from the target opening.
The reason for this is because the learning value is always reflected for 0 lift, after being used for a long
time 0 points are shifted.
As such, the factory spec. is a relative evaluation and not an absolute evaluation.
1
Injector non-injection instruction
From the active test screen
2
EGR actuation test
3
Air heater relay actuation test
4
Supply pump difference learning (clear the learning value)
From the utility screen
Factory
specification
Engine vibration and noise are increased when the injection for the corresponding cylinder is stopped. The same results
must be attained from all the cylinders.
Factory
specification
Low side: When target EGR valve openings of 0% and 15% are given alternately, there must not be disparity in the actual
EGR valve opening.
High side: When target EGR valve openings of 35% and 60% are given alternately, there must not be disparity in the
actual EGR valve opening.
(1) Opening
(2) Operation Check on the Fully
Closed Valve Side
(3) Operation Check on the Fully
Open Valve Side
(4) Fully Open
→
Impact
Dampening When Fully
Closed
KiSC issued 05, 2012 A
