Transmission Tester Use

Tester Use
The tester allows a technician to operate the electrical portion of the transmission independently of the vehicle electronics to allow the technician to determine transmission concerns. Tester use is divided into five parts:
^ Preparation
^ Hook-up Procedure
^ INSPECTION (In-shop)
^ INSPECTION (On-road)
^ Tester Removal

Preparation
1. Check transmission fluid.
2. Check for add-on items (phones, computers, CB radio, etc.).
3. Inspect wiring harness and connectors.
4. Check for vehicle modifications.
5. Check shift linkage adjustment.
6. Verify customer concern.
7. Warm vehicle to normal operating temperature.
8. Perform On-board Diagnostics.
9. Record all DTCs.
10. Service all non-transmission codes.

Hook-up Procedure

Note: During tester use additional DTCs may be set. Therefore, it is important that all codes are erased after service has been performed. To eliminate all codes perform the After Repair Procedure.

1. Disconnect vehicle wiring harness at transmission connector.

Caution:
^ Do not pry off connectors with a screwdriver. This could damage the connector resulting in transmission concerns.
^ If vehicle is equipped with heat shields, remove them Always replace heat shields after service.
^ Route all cables away from heat sources.

2. Set tester solenoid switch to OHMS CHECK position.
3. Install appropriate overlay onto tester.

SST No.49 UN01 132

4. Connect appropriate interface cable to tester and transmission.

SST No.49 UN01 132




5. Install a line pressure gauge into line pressure tap on transmission.

Caution: Route gauge line away from heat sources.

6. Plug tester power supply into cigar lighter.

Note: At this time, all LEDs should illuminate for a short period. This is a tester internal circuit check and bulb check.

7. Set BENCH/DRIVE switch to BENCH mode.