A/T - 4T60E Solenoid Resistance Values

90pontiac22
Bulletin Number: 91-7-21
Reference Number: 077146
Publish Date: 11/90
SOLENOID(S) RESISTANCE TEST FOR:
Subject: SHIFT SOLENOIDS - A AND B, TCC
SOLENOID, TCC P W M SOLENOID

Models

Affected: 1991 GRAND PRIX MODELS W/4T60-E
BULLETIN COVERS:

Resistance test values of solenoids on a vehicle equipped with a HYDRA-MATIC 4T60-E transaxle.

Figure 1 - Hydra-Matic 4T60-E Electrical Circuits:

SERVICE PROCEDURE: (Figure 1)

Reference the resistance values below when testing solenoids with the available Transaxle Test Box J38791, following all instructions and notices included with the tool.
SERVTCE MANUAL REFERENCE:

Refer to 1991 Service Manual On-Car section for proper disassembly and assembly procedures.

SERVICE NOTES:

NOTICE: If energizing the TCC solenoid without using the Transaxle Test Box J 38791, ensure that the positive lead is connected to the "A" terminal and the negative lead to the "D" terminal. If the leacts are reversed, the TCC solenoid diode will be damaged by the reverse polarity. A damaged TCC diode will allow the brake switch to be damaged by high voltage arcing, when the brake switch is depressed.