Daewoo MUSSO Service Manual page 1006

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Table 3.3 - Readings for Resistance/Shift Lever Positions

Shift Lever Position

Diagnostics Inputs

The diagnostics control input or K-line is used to initiate the outputting of diagnostics data from the TCU to a diagnostic

test instrument. This input may also be used to clear the stored fault history data from the TCU's

retentive memory. Connection to the diagnostics input of the TCU is via a connector included in the vehicle's wiring

harness or computer interface. Refer to the vehicle manufacturer's manual for the location of the self test

Battery Voltage Monitoring Input

The battery voltage monitoring input connects to the positive side of the battery. The signal is taken from the

main supply to the TCU.

If operating conditions are such that the battery voltage at the TCU falls below 11.3V the transmission will adopt a 'low

voltage' mode of operating in which shifts into first gear are inhibited. All other shifts are allowed but may not occur

because of the reduced voltage. This condition normally occurs only when the battery is in poor condition.

When system voltage recovers, the TCU will resume normal operation after a 3 second delay period.

The outputs from the TCU are supplied to the components described below:

The TCU controls seven solenoids. Solenoids 1 to 6 (S1 to S6) are mounted in the valve body, while Solenoid 7 (S7)

is mounted in the pump cover. The normal state (OPEN/CLOSED) and the functions associated with the solenoids

are detailed in table 3.4. Table 3.5 details the S1 and S2 logic for static gear states. The logic during gear changes for

S1 to S4 and S7 is detailed in table 3.6.

AUTOMATIC TRANSMISSION 5A-27

Resistance (OHMS)

10.8k - 11.2k

Chapters

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