Diagnosis; Diagnostic System - SSANGYONG 1999 Musso Service Manual

5A-60 AUTOMATIC TRANSMISSION

DIAGNOSTIC SYSTEM

Recommended Test Equipment and Procedure
The test equipment is designed to be used with the control modules in all vehicles. The components used in the
transmission application are:
Multi Function Tester, and
Appropriate vehicle for testing.
Multi Function Tester (MFT)
The MFT is programmed with the special vehicle diagnostic software that allows selection of the unit under test.
The program allows the proper communication to the Transmission Control Unit (TCU).
It then requests information from the user via a menu system to select the required set up.
Examples are viewing codes, clearing error codes, and real-time operation. Set up and operation instructions are
detailed in the user manual.
This equipment can be used by trained personnel such as technicians and mechanics to diagnose electronic and
wiring problems relating to the vehicle transmission. Information that is available includes engine and road (shaft)
speed, transmission oil temperature, throttle position, solenoid/gear status and gear lever position. Current and
stored faults detected by the electronics are also available.
TCU Pin Description
The TCU pin descriptions are listed in table 6.1.1.
The wiring loom pins are shown in figure 6.1.1
Table 6.1.1 - TCU Pin Description
Identification
Pin
No.
Common Ground
1
2 Do not use
Mode Indicator Lamp -
3
'Winter'
Gear Position 'Park'
4
Lamp
Gear Position 'Reverse'
5
Lamp
Gear Position 'Neutral'
6
Lamp
7 Do not use
Engine Speed Input
8
Sensor (-Ve)

DIAGNOSIS

4WD 4WD
Type
(Diesel) (Gas)
GND
O O
-
OP
OP
OP
OP
O
O
-
O
IP
Description
Main power ground (or the module. Connects
directly to the battery negative terminal.
Indicates 'WINTER' mode shift schedule is se-
lected.
Drives the jewel in the instrument cluster to in-
dicate 'PARK' gear lever position.
Drives the jewel in the instrument cluster to in-
dicate 'REVERSE' gear lever position.
Drives the jewel in the instrument cluster to in-
dicate 'NEUTRAL' gear lever position.
Flywheel/Ring gear pulses to indicate engine
speed.