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Ningbo Landi Transmission Parts Manufacturing Co.,Ltd
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Knowledge
BENZ W202 722.6 electronically automatic transmisssion line description
Power supply | W/S driving mode switch confirmed | Shift and hydraulic control solenoid avlve | Temperature sensor/P/N start control switch |
Power supply
First,the battery power by K40/4 integrated relays C plug first leg K1 relay. When the ignition switch is turned to the second paragraph of the IG ON,
15 Power K40 / 4 integrated relays C3, to the electromagnetic coil K1 relay, so the relay K1 engagement, the current then flows through F3 10A fuse,
Then by F2 plug the 3rd feet, and then sent electronically controlled automatic transmission computer for the first 29 feet; 30 feet Ground. Also K1 relay current will flow
By A1 to F5 20A fuse plug No. 3 feet to the jet ignition system ME A computer plug No. 2 feet, K2 is also connected to the starter relay, computers No. 30 foot pin to Ground.
15 Power K40 / 4 integrated relays C3, to the electromagnetic coil K1 relay, so the relay K1 engagement, the current then flows through F3 10A fuse,
Then by F2 plug the 3rd feet, and then sent electronically controlled automatic transmission computer for the first 29 feet; 30 feet Ground. Also K1 relay current will flow
By A1 to F5 20A fuse plug No. 3 feet to the jet ignition system ME A computer plug No. 2 feet, K2 is also connected to the starter relay, computers No. 30 foot pin to Ground.
Stall comfirmation
pin 25,26,27,28 connected computer gear mode selection switch, the shift lever is used to identify the current position in which, for example:
When automatic gearbox 722.6 unplug the computer, to the amount of electricity meter 25,26,27,28 feet, when P block, the first foot pin 25,26,27
There will be a voltage output, R block, the first will be the voltage output pin 26,27,28 feet (note: reversing light switch control circuit is another and gear), and so on; according to the following table, you can find out its gear position.
When automatic gearbox 722.6 unplug the computer, to the amount of electricity meter 25,26,27,28 feet, when P block, the first foot pin 25,26,27
There will be a voltage output, R block, the first will be the voltage output pin 26,27,28 feet (note: reversing light switch control circuit is another and gear), and so on; according to the following table, you can find out its gear position.
Stalls | Computer Pin | |||
25 | 26 | 27 | 28 | |
P | 1 | 1 | 1 | 0 |
R | 0 | 1 | 1 | 1 |
N | 1 | 0 | 1 | 1 |
D | 0 | 0 | 1 | 0 |
4 | 0 | 0 | 0 | 1 |
3 | 0 | 1 | 0 | 0 |
2 | 1 | 0 | 0 | 0 |
1 | 1 | 1 | 0 | 1 |
Not:The mode selection switch gear eleven digital electronic switch,the contact is not a simple switch,which is a combination of gears and contact point into a digital circuitry of digital elelctronic switch.
W/S driving mode switch confirmed
Pin No.3 of the computer connected to the gear pin mode selection switch,the use of ON/OFF signal to detect "W"or snow drive mode "S" stardard traveling.
P/R Parking gear lever lock device
No.4-pin locking pin to P/R solenoid raft output stage,when the IG ON,P/R P block lock solenoid valve fixed,when depressing the brake pedal,the brake lamp switch signal is transmitted to the ABS/ETS computer,and then transmitted by CAN 722.6 automatic gearbox computer,computer and then relesed under the command P/R locked.
When the speed is more than 12Km/h,ABS/ETS will speed automatic transmission computer signals to 722.6,722.6 computer then P/R locked solenoid valve of the push rod,in order to prevent the gear lever from N to R block,causing damage of automatic transmission.
Pin No.2 of the computer
For the kickdown switch signal when throttle in the end,the forced shift switch is turned to the 2nd fot grounding,722.6 automatic transmission computer will put the first gear down,in order to overtake.
Pin No.1 of the computer
Diagnostic cable to the diagnostic connector No.10 to make fault diagnosis,only use HHT diagnosis,pulse counter is unable to tune fault code.
