Scan Tool Testing and Procedures

Use Rotunda Transmission Tester 007-00130 and Rotunda Transmission Range (TR) Sensor Cable "E" 418-F107 (007-00111) with Digital (TR) Sensor Overlay 007-00131 or equivalent to diagnose electronically controlled transmissions. The following instructions outline the set-up and use of this tester in the pinpoint tests for the 4R70W.

OVERLAYS AND ADAPTERS
The following transmission tester overlays and adapters must be used with the Rotunda Transmission Tester 007-00130 or equivalent to properly diagnose the 4R70W transmission.
- Rotunda Transmission Range (TR) Sensor Cable "E" and Digital TR Sensor Overlay (007-00131) or equivalent.

TESTER JACKS
1. VPWR Pin Jacks (red): VPWR test points for solenoid circuits.
2. Solenoid (MCCC, EPC) Signal Line Pin Jacks (black): Signal line test points for solenoid circuits.

NOTE: The tester overlay is labeled for the MCCC solenoid. This is used to test the Torque Converter Clutch (TCC) solenoid.

3. BAT+ (red) and BAT-(black) Pin Jacks: Battery reference points when measuring circuits for shorts.
4. TOT Pin Jacks: Test points for Transmission Fluid Temperature Sensor (TFT sensor).
5. OSS Pin Jacks: Test points for output speed shaft sensor (OSS).

LEDS AND CONTROLS
1. Cable Correctly Installed LEDs: When LED is lit, the cable is installed correctly.
2. Status LEDs: LED OFF when not activated by tester (solenoid not activated, open circuit or signal line short to ground). LED green when activated by tester and current draw is correct. LED red when activated by tester and current draw is excessive (short to battery positive voltage (B+)). All LEDs light orange during self-test.
3. Solenoid Activate Buttons: Energize respective solenoids during click testing and activate selected circuits during DRIVE mode testing.
4. Bench/Drive Switch: Selects operating mode, either BENCH or DRIVE.
5. Solenoid Select/Gear Select Switch: Has three functions. In BENCH MODE: acts as shift solenoid selector for click testing. In DRIVE MODE: acts as forward gear selector in place of vehicle's PCM-controlled shifting. Hydraulic safety mechanisms and overrides are built in to the transmission. In OHMS CHECK: allows you to measure resistance (ohms).