Transmissions With Hydraulic Control E18/2

Read Measuring Value Block (scan tool function 08) for transmissions with hydraulic control E18/2

CAUTION! To avoid risk of accident during measuring and test drives, note the safety precautions.

Procedure
^ Connect VAS 5051 tester or VAG 1551 scan tool and select Transmission Control Module (TCM) using "address word" 02.
Ignition must remain switched on for this.





Indicated on display
^ Press PRINT button to turn on Scan Tool (ST) printer. Indicator lamp in button must light up.
^ Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.





When indicated on display:
^ Enter desired display group number
^ display group overview.
^ Confirm input using the -Q- button.





Indicated on display (example) for display group 001:

Notes:
^ Explanation of values in individual display fields see test table.
^ Display can be printed out on the paper roll when printer is switched on.





^ To switch to a different display group, proceed as follows:

^ If specified values are obtained in all display fields, press (arrow) button.





Indicated on display (function selection):

Overview of selectable display group numbers for transmission with hydraulic control E18/2





Test table 1 of 8





Test table 2 of 8





Test table 3 of 8





Test table 4 of 8





Test table 5 of 8





Test table 6 of 8





Test table 7 of 8





Test table 8 of 8

Notes:
^ When the printer is switched on, the contents of the display will be printed out on the scan tool log.
^ If specified values are not obtained in all display fields:
^ Press (arrow) button.





Indicated on display





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.





Test table 1 of 3





Test table 2 of 3





Test table 3 of 3

1) While driving: A second mechanic is required to read specifications.

Note: For display group number 001, display field 1 to 3;
^ Test conditions: Shifting process must be finished. Vehicle must not be in deceleration mode (no decline driving or engine brake).

Test table for transmissions with hydraulic control E18/2





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.
2) Transmission Control Module is equipped with automatic gear follower. The forward gear is indicated that the Transmission Control Module (TCM) would activate in selector lever position "D".

Note: For display field 4 of display group number 001:
^ Faulty solenoid valves or other diagnostic malfunctions can prevent the selection of certain gears.





1) While driving: A second mechanic is required to read specifications.





Test table 1 of 2





Test table 1 of 2

1) While driving: A second mechanic is required to read specifications.





Test table 1 of 3





Test table 2 of 3





Test table 3 of 3

1) While driving: A second mechanic is required to read specifications.

Note: For display field 3, speed:
^ Display of the speedometer and values at VAS 5051 or VAG 1551 may deviate slightly from each other.





For ATF temperature:
^ an indicated temperature of minus 50°C indicates a short circuit to Ground (GND),
^ an indicated temperature of minus 180°C indicates a short circuit to B+ or an open circuit,





Test table 1 of 4





Test table 2 of 4





Test table 3 of 4





Test table 4 of 4

1) this display field is not displayed until model year 2000 (May 1999).

Note: For in-between positions:
^ When the selector lever is shifted into one of the in-between positions indicated, the Scan Tool (ST) indicates "Z1" "Z2", "Z3" or "Z4". Display in instrument cluster must not indicate a gear selected, i.e. PRND432 is indicated without any particular gear highlighted.





Test table 1 of 2





Test table 2 of 2

Note: For display field 3 of display group number 004:
^ The input signals of the Multi-function Transmission Range (TR) switch -F125- can be checked at the Transmission Control Module (TCM).





Test table 1 of 3





Test table 2 of 3





Test table 3 of 3

1) While driving: A second mechanic is required to read specifications.





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.

Notes for display group number 5, display field 1 to 3;
^ Unswitched solenoid valves (inactive) are indicated with "O", switched solenoid valves (active) are indicated with "1".





1) While driving: A second mechanic is required to read specifications.

Note: For display group number 5, display field 1 to 3;
^ Unswitched solenoid valves (inactive) are indicated with "0". switched solenoid valves (active) are indicated with "1".





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.





Test table

1) While driving: A second mechanic is required to read specifications.

Note: For specified current of solenoid valves:
^ Faulty solenoid valves or pressure control valves or clutches or other malfunctions can prevent shifting into a specific gear.





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.





Test table 1 of 3





Test table 2 of 3





Test table 3 of 3

1) While driving: A second mechanic is required to read specifications.

Note:
^ Test requirements for torque converter slip speeds:
^ "TC closed": Shifting must be complete (wait at least 1 sec.), the Torque Converter (TC) must be closed and the accelerator pedal value must be constant.
^ "TC control": Indicated values are valid for the "regulating condition" of the throttle converter (control). Under inconvenient conditions (e.g. accelerating on a hill), this condition is not reached until 20 seconds after the shifting process has been completed. During this regulating phase, slip values of up to 350 RPM can be reached.
^ Excessive torque slip speeds can also indicate slipping clutches or non-activated shifting





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.
2) Operate kick down means depress accelerator pedal until impact. Display must simultaneously indicate "100%" in display field 2.





Test table

1) While driving: A second mechanic is required to read specifications.

Note: For display field 1:
The signal for actual engine torque is transmitted by the Engine Control Module (ECM) to the Transmission Control Module (TCM) via the CAN bus wiring.





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.
2) This display field is not displayed until model year 2000 (May 1999).





Test table

1) While driving: A second mechanic is required to read specifications.
2) This display field is not displayed until model year 2000 (May 1999).





Test table 1 of 2





Test table 1 of 2

1) Operate up shift (+) by shifting lever toward front. For vehicles equipped with a Tiptronic sport steering wheel, up shift must also be operated by pressing the upper left or right button (+) on the steering wheel.
2) Operate down shift (-) by shifting selector lever toward rear. For vehicles equipped with a Tiptronic sport steering wheel, down switch must also be operated by pressing the lower left or right button (-) on the steering wheel.





Test table 1 of 3





Test table 2 of 3





Test table 3 of 3

1) This display group number is not displayed until model year 2000 (May 1999).

Note: For display group number 013;
^ Display field 2 and 4: When replacing the Engine Control Module (ECM), the same indication that appeared for the old control module should appear after installation. If this is not the case, the wrong Engine Control Module (ECM) is installed, or it is incorrectly coded.





Test table 1 of 2





Test table 2 of 2

1) While driving: A second mechanic is required to read specifications.
2) If "0" is indicated and there are no malfunctions stored in DTC memory, then the relevant control module is not CAN capable (or is faulty).