AD27.19-S-3003B | Automatic transmission (ATN) diagnosis operational check | 26.5.98 |
MODEL 638 with ENGINE 611.980
with CODE (G40) Automatic transmission
with CODE (MQ4) Engine OM611 DE22 LA (75 kW)
with CODE (MQ5) Engine OM611 DE22 LA (90 kW)
MODEL 638 with ENGINE 111.950 /980
with CODE (G40) Automatic transmission
with CODE (MR7) Engine M111 E20 (95 kW) Euro III
with CODE (MR8) Engine M111 E20 (105 kW) Euro III
Automatic transmission diagnosis (ATN) previous knowledge | |||
Automatic transmission (ATN) emergency running | |||
Operational check | |||
Scope of test | Operation/requirement | Specification | Possible cause / Remedy |
1 Fault indicator | Ignition:ON | Warning lamp comes on after switching on the ignition for approx. 2 s | |
2 Selector lever position | Ignition:ON Operate brake pedal Shift through all selector lever positions Check selector lever position using actual value 08 in the HHT | ||
3 Kick down switch (S91) | Ignition:ON Operate accelerator using actual value 04 in the HHT until value 100% is displayed. Pressure point must be clearly felt. Push accelerator to the board and check the kick-down function with the aid of the actual value 10 in the HHT. | ||
4 Program pre-selector (S4) | Ignition:ON Shift through the driving programs and compare with the HHT actual value 09 |
Model 638 with Engines 111.950/980 up to 31.1.00 | |
5 Program pushbutton (S3) | Ignition:ON Shift through the driving programs and compare with the HHT actual value 26 |
Model 638 with Engines 111.950/980 as of 1.2.00 or with Engine 611.980 | |
6 Stop lamp switch | Ignition:ON Check stop lamp switch ON/OFF function using actual value 11 in the HHT. | ||
7 Oil-temperature sensor | Ignition:ON Check the oil-temperature with the HHT- actual value 05, and conduct a plausibility check | ||
8 Solenoid valve and pressure regulator | Actuate the transmission's solenoid valve and pressure regulator | ||
9 Starter interlock | Shift selector lever to position P Ignition:ON Start engine Ignition:OFF/ON Operate brake pedal Shift selector lever to position R Start engine Ignition:OFF/ON Operate brake pedal Shift selector lever to position N Start engine | Engine starts Engine does not start, starter should not turn Engine starts In selector lever positions D, 3, 2, 1 the engine should not start | |
10 Keylock | Shift selector lever to position P Ignition:ON Operate brake pedal Shift selector lever to position R Shift selector lever to position P |
Key cannot be removed Key can be removed |
Mechanical fault in ignition |
11 Shiftlock | Shift selector lever to position P Ignition:ON Do not operate brake pedal Attempt to move the selector lever to position R Operate brake pedal Attempt to move the selector lever to position R |
Selector lever locked Selector lever position R can be engaged |
Mechanical fault in selector lever interlock |
12 Stall speed | Operate brake pedal and hold Pull parking brake on full Shift selector lever to position D Press accelerator to board | Engine version M 111 E20 (MR7)= 2100 200 min-1 Engine version M 111 E23 (MR)= 2300 200 min-1 Engine version OM 611 DE22 LA (MQ4)= 2380 200 min-1 Engine version OM 611 DE22 LA (MQ5)= 2575 200 min-1 |
Automatic transmission control module |
13 Reverse gear function | Shift selector lever to position P Operate brake pedal Ignition:ON Start engine Shift selector lever to position R If possible release the brake and reverse a short distance with the vehicle |
Referenced documents
- ad2719s200108a Notes on actuating automatic transmission (AGN)
- ad2719s200111a Automatic transmission (AGN), emergency running mode functions
- ad2719s2001b Automatic transmission (AGN) diagnostics, previous knowledge
- ad2719s600001c Control unit voltage supply, testing electrical system of electronic transmission control (ETC)
- ad2719s600001d Control unit voltage supply, testing electrical system of electronic transmission control (ETC)
- ad2719s600002c Diagnostic output, testing electrical system of electronic transmission control (ETC)
- ad2719s600002d Diagnostic output, testing electrical system of electronic transmission control (ETC)
- ad2719s600010c Reverse/parking lock valve internal resistance, testing electrical system of electronic transmission control (ETC)
- ad2719s600013c Starter lock-out contact (ASK), testing electrical system of electronic transmission control (ETC)
- ad2719s600024c Automatic transmission position switch, check electronic transmission control (ETC) electrics
- ad2719s600026c Electronic transmission control (ETC) test of electrical system CAN data bus
- ad2719s600028c Kickdown switch, testing electrical system of electronic transmission control (ETC)
- ad2719s600028d Kickdown switch, testing electrical system of electronic transmission control (ETC)
- ad2719s600037a Automatic transmission program switch, testing electrical system of electronic transmission control (ETC)
- ad2719s600038a Automatic transmission program button, testing electrical system of electronic transmission control (ETC)
- ad2719s600039a ETC test of electrical system automatic transmission selector lever
- ad2719s600040a ETC test of electrical system reverse lamp signal
- ad2719s600041a Outputs to instrument cluster, testing electrical system of electronic transmission control (ETC)
- ad2719s600041b Outputs to instrument cluster, testing electrical system of electronic transmission control (ETC)
- ad2719s600042a ETC test of electrical system solenoid valve 1
- ad2719s600043a ETC test of electrical system solenoid valve 2
- ad2719s600044a Pressure governor 1, check ETC electrics
- ad2719s600045a ETC test of electrical system pressure regulator 2
- ad2719s600046a ETC test of electrical system pressure regulator 3
- ad2719s600047a ETC test of electrical system pressure regulator 4
- ad2719s600048a ETC test of electrical system automatic transmission oil temperature sensor