TB - A4LD Transmission

Enter this Pinpoint Test only when service code 86 or 89 is received during Quick Test.

This Pinpoint Test is only intended to diagnose the following:

1. Harness circuits: CCO, SS 3/4 - 4/3, VPWR.
2. CCO solenoid.
3. Shift solenoid 3/4 - 4/3.
4. ECA computer processor.

To prevent replacement of good components, be aware that these non-EEC areas may be faulty:

1. Hydraulic brakes.
2. Emergency brakes.
3. Internal transmission problems.
4. Transmission linkage.


PINPOINT TEST TB SCHEMATIC

Pinpoint Test TB Schematic:

TEST STEP TB1

Test Step TB1:

TEST STEPS TB2 - TB3

Test Steps TB2 - TB3:

TEST STEPS TB4 - TB5

Test Steps TB4 - TB5: