Home/Audi/A8/Audi A8 D2 (1994-1999)/Repair manual/On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission (01l, Awd)/Testing

Contents

Wiring diagrams Section: On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission (01l, Awd)

Safety precautions

Transmission controls

Malfunction recognition by the TCM

TCM backup functions

Mechanical backup with non-active control module

Malfunction Indicator Lamp (MIL), function

MIL functional check

Conditions for recognition of a driving cycle (Dcy)

On Board Diagnostic (OBD), functions

Electrical and electronic components, locations

Removing and installing Transmission Control Module (TCM) -J217

Installing

VAG 1551 Scan Tool (ST), connecting and selecting function

Test requirements

VAG 1551 Scan Tool (ST), overview of available functions

Code Control Module (scan tool function 07)

Diagnostic Trouble Code (DTC) table

Output Diagnostic Test Mode (DTM) (function 03)

Requirement

Read Measuring Value Block (function 08)

Electrical testing

Testing

Multi-pin connector (88-pin connector) of TCM -J217- (socket numbers on VAG 1598/20)

Overview of test steps (of 88-pin connector)

Disconnecting connector

Wiring harness between Transmission Control Module (TCM) and transmission, checking

Transmission diagram for all-wheel drive

Shift element positions

All sections

Testing Audi A8 D2

On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission (01l, Awd)

Testing

Conduct steps recommended in DTC table only.
Switch ignition off for all test steps, remove multi-pin connector from TCM -J217- (located in right side of plenum, see «ELECTRICAL AND ELECTRONIC COMPONENTS, LOCATIONS»(/audi/a8/d2-1994-1999/remont/automatic-trans/#on-board-diagnostic-obd-5-spd-automatic-transmission-01l-awd__electrical-and-electronic-components-locations) ), and connect test box VAG 1598/20 to wiring harness connector.

If measured values deviate from specified values

Carry out all corrective actions listed on right side of test table. See «ELECTRICAL TEST TABLE»(/audi/a8/d2-1994-1999/remont/automatic-trans/#on-board-diagnostic-obd-5-spd-automatic-transmission-01l-awd) .