Electronic transmission control (ETC) diagnosis troubleshooting · ad2719s5000a · Mercedes-Benz WIS

AD27.19-S-5000A

Electronic transmission control (ETC) diagnosis troubleshooting

11.6.98

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

	Connection and use of test equipment		AD00.00-S-1000AZ
	Automatic transmission diagnosis (ATN) previous knowledge		AD27.19-S-2001B
	ETC operating principle		AD27.19-S-2000-14A
	Troubleshooting
Complaint	Possible cause/	Note	Remedy / Test step
Winter program inoperative	Voltage supply Program pre-selector automatic transmission Program pushbutton automatic transmission	Model 638 with Engines 111.950/980 up to 31.1.00 Model 638 with Engines 111.950/980 as of 1.2.00 or with Engine 611.980	AD27.19-S-6000-01C AD27.19-S-6000-01D AD27.19-S-6000-37A AD27.19-S-6000-38A
Power program inoperative	Voltage supply Program pre-selector automatic transmission	Model 638 with Engines 111.950/980 up to 31.1.00	AD27.19-S-6000-01C AD27.19-S-6000-01D AD27.19-S-6000-37A
Economic program inoperative	Short circuit after plus in program selector lever for automatic transmission (A40) or in cable		AD27.19-S-6000-39A
Kick-down inoperative	Voltage supply Kick down switch CAN bus		AD27.19-S-6000-01C AD27.19-S-6000-01D AD27.19-S-6000-28C AD27.19-S-6000-28D AD27.19-S-6000-26C
Key-lock inoperative. Key cannot be removed when in position P	Selector lever cable incorrectly installed Ignition
Key-lock inoperative. Key can be removed when the selector lever is not in P-position	Selector lever cable incorrectly installed Ignition
Shift-lock inoperative. When the selector lever is in the P-position, it is possible to move into another position - without operating brake pedal	Shift-lock coil voltage supply Shift-lock coil Stop lamp switch Mechanical fault in selector lever		AD27.19-S-6000-10C AD27.19-S-6000-39A
Shift-lock inoperative. Brake pedal operated, selector lever cannot be moved from P-position	Shift-lock coil voltage supply Shift-lock coil Stop lamp switch Mechanical fault in selector lever		AD27.19-S-6000-10C AD27.19-S-6000-39A
Engine will not start although the selector lever is in P or N position	Relay starter interlock Position switch automatic transmission Selector lever's cable to the position switch		AD27.19-S-6000-13C AD27.19-S-6000-24C Terminal 50 signal
Engine will not start although the selector lever is not in P or N position	Relay starter interlock Position switch automatic transmission Selector lever's cable to the position switch		AD27.19-S-6000-13C AD27.19-S-6000-24C
No selector-lever illumination	Terminal 58 signal		AD27.19-S-6000-39A Selector lever light
Selector-lever position not displayed in instrument cluster	CAN bus		AD27.19-S-6000-26C Instrument cluster
Selector-lever position does not correspond with display in instrument cluster	Position switch automatic transmission CAN bus Selector lever's cable to the position switch		AD27.19-S-6000-24C AD27.19-S-6000-26C Instrument cluster
Fault indicator in instrument cluster not illuminated	Cable Fault indicator		AD27.19-S-6000-41A AD27.19-S-6000-41B

Referenced documents

ad0000s1000az Connection and use of testing equipment
ad2719s200014a ETC function notes
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)
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
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)