Operation and maintenance manual

Section 120-0010
Transmission - Transmission and Mounting
SM 2124 Rev 3 8-03
30
Engine speed sensor (5) and turbine speed sensor (8) -
gap should be 0.5 - 0.8 mm.
Central gear train speed sensor (7) - gap should be 0.3
+
/- 0.1 mm.
Output speed sensor (6) - gap should be 1.0 - 1.5 mm.
Lock-Up Solenoid
The solenoid can be checked at plug X9, pins 7 & 8
(located below the dash panel).
Resistance: 60 - 80 ohms
Current: 0.25 - 0.35 A
Voltage: 24 V
Pressure can also be checked (see Fig. 4).
Temperature Sensors
The sump temperature sensor, located in the main
control valve (2) can be checked at plug X8, pins 14 &
15. Resistance should be 1 000 - 1 500 ohms.
The retarder oil temperature sensor (1) can be checked
at plug X9, pins 15 & 16. Resistance should be 800 - 1
500 ohms.
Shift Controller
To troubleshoot the shift controller, continuity checks
can be easily done by removing plug X2, selecting
position and measuring across following pins:
Neutral - Pins 2 & 5
Forward - Pins 2 & 4
Reverse - Pins 2 & 6
Up - Pins 2 & 7
Down - Pins 2 & 8
Button - Pins 2 & 10
Transmission To Engine CAN-Bus
The communication link between the transmission and
the engine can be electrically checked by measuring
resistance and voltage. Refer to tables below.
Solenoid Coil Ratings
The following data should be referenced when
checking solenoids:
1. Diff-lock solenoid(s). Solenoid(s) can be checked at
plug X9, pins 11 & 12.
Resistance: 41 ohms
Current: 0.6 A
Measuring CAN-Bus Resistance At Plug X4 (Ignition OFF)
Measurement between Specified Value (ohms) Actual Value (ohms) Possible Cause
CAN H (X4 pin 1) 60 0 Short circuit from CAN H to CAN L
and 60 120 Connection to one end of
CAN L (X4 pin 2) resistor is damaged or cut off
60 Infinity End resistors damaged or cut off
Measuring CAN-Bus Voltage At Plug X4 (Ignition ON)
Measurement between Specified Value (Volts) Actual Value (volts) Possible Cause
CAN H (X4 pin 1) 24 Short circuit from CAN H to battery
and 2.4 - 2.9 0 Short circuit from CAN H to ground
Ground 0 - 2.3 Intermittent short circuit from
3.0 - 24 CAN H to another component
CAN L (X4 pin 2) 24 Short circuit from CAN L to battery
and 2.2 - 2.7 0 Short circuit from CAN L to ground
Ground 0 - 2.1 Intermittent short circuit from
2.8 - 24 CAN L to another component