Diagnostic Manual, Engines, Volume 1
B 2 Closed Throttle Position (CTP) Test, Adjustment 1)
07-2053 or 2056 15)
Listing of Test Steps
| 1 |
HHT with multiplexer to data link connector |
connect/disconnect. |
| 2 |
Throttle control |
check throttle operation and condition. Lubricate bearings, gate levers and ball sockets. |
| 2.1 |
WOT, CTP stop at pedal value sensor (B37) |
check. |
| 3 |
Selector lever position |
P/N |
| 4 |
Engine oil temperature |
check. |
| 5 |
ECT |
check. |
| 6 |
Ignition timing Engine: at idle |
check (see Test and Adjustment Data, Section A). |
| 7 |
Engine RPM at idle |
check (see Test and Adjustment Data, Section A). |
| 8.0 |
On/off ratio |
check 1) . |
| 8.1 |
CTP recognition (accelerator pedal not depressed) |
check, HHT display ON 1) . |
| 9 |
Closed throttle under load |
check with selector lever in "D"(with service and parking brake applied) and consumers on. |
1) Only possible using HHT (Test and Adjustment Data, section A).
15) Time Guide operation no. and/or SMS job no.
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Note:
Refer to section B1, Engine Test and Adjustment, for Special Tools and connection diagram.
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