COMPONENT CODE DA
PARTS & SERVICE REF NO. AA02003
DATE January 7, 2002
NEWS (C) Page 1 of 6
SUBJECT: TRANSMISSION SHIFTER UPGRADE AND NEW DIAGNOSTIC INFOR-
MATION
PURPOSE: Inform the field of the new shifter for the graders.
APPLICATION: 830B Motor Grader Serial Number 210513 AND UP
830C Motor Grader Serial Number 210513 AND UP
850B Motor Grader Serial Number 210513 AND UP
850C Motor Grader Serial Number 210513 AND UP
870B Motor Grader Serial Number 210513 AND UP
870C Motor Grader Serial Number 210513 AND UP
GD530A-2BY Motor Grader Serial Number 210242 AND UP
GD530A-2CY Motor Grader Serial Number 210242 AND UP
GD530AW-2BY Motor Grader Serial Number 210242 AND UP
GD530AW-2CY Motor Grader Serial Number 210242 AND UP
GD650A-2BY Motor Grader Serial Number 210242 AND UP
GD650A-2CY Motor Grader Serial Number 210242 AND UP
GD650AW-2BY Motor Grader Serial Number 210242 AND UP
GD650AW-2CY Motor Grader Serial Number 210242 AND UP
GD670A-2BY Motor Grader Serial Number 210242 AND UP
GD670A-2CY Motor Grader Serial Number 210242 AND UP
GD670AW-2BY Motor Grader Serial Number 210242 AND UP
GD670AW-2CY Motor Grader Serial Number 210242 AND UP
FAILURE CODE: DAQ0Z9
DESCRIPTION:
AA02003
Page 2 of 6
For better quality and enhanced diagnostics, a new transmission shifter p/n 1439 905 H91 replaces trans-
mission shifter p/n 1433 426 H92. The new shifter uses a U-shift pattern, the industry standard.
The new shifter is different from the old shifter. The old shifter did not control the parking brake while
the new shifter controls the parking brake circuit in the "Park" position.The new shifter also has on-board
diagnostics. A red LED is located on the right side of the shifter. The LED flashes a code to indicate the
type of problem.
NOTE: When the LED flashes an error code, the transmission automatically shifts to Neutral despite the
gearshift remaining at the selected position. Thus, the machine cannot move. Move the gearshift to the
Neutral position to coincide with the transmission being in neutral, and which also clears the controller’s
memory. After clearing the controller’s memory, the transmission gears can once again be engaged. To
determine if the problem is a "glitch" or one-time occurrence, reposition the gearshift to the desired gear
range and continue with the operation. If the LED flashes again, count the number of flashes because a
problem exists. See the following table for a diagnostic interpretation of the LED flash code, and make
the needed repairs. After repairing the problem, clear the controller’s memory before returning the
machine to service.
AA02003
Page 3 of 6
Operational Error Code Identification
Time needed in
Error Park or Neutral to
Description LED response Action
Code clear the error
code
A Hall sensor may have 1 flash, 2 second
1 failed or a magnet may pause before LED 1.5 seconds Replace the shifter
have fallen out. flashes again.
Using an allen wrench,
loosen the 24-pin connec-
tor at the shifter. Turn the
the ignition switch on.
2 flashes, 2 second Using a voltmeter, probe
One of the output lines to pause before LED 2.5 seconds the wiring harness pins
2
the battery has shorted. flashes again and determine if there is a
positive voltage on pins 7,
8, 12, 13, 18, 19, 20, 21,
22, 23 or 24. Determine
cause of positive voltage
and correct.
Remove the shifter con-
nector using a hex allen
wrench. With a volt meter
probe the wiring harness
3 flashes, 2 second pins and determine if there
One of the output lines to 1.5 seconds
3 pause before LED is a short to ground on
ground has shorted
flashes again pin's 7, 8, 12, 13, 18, 19,
20, 21, 22, 23 or 24.
Determine the cause of
the short circuit and cor-
rect.
The signal to the proces-
sor is lost. There is an Return the gearshift to
4 flashes, 2 second
unknown source for the 4.5 seconds Neutral. If the source does
4 pause before LED
interrupt. If the problem not clear, replace the
flashes again
does not clear, the unit is shifter.
nonfunctional.
The unit has failed if this
Stays on continu-
condition cannot be
5 osly. No flashes or Will not clear Replace the shifter
cleared by powering the
pauses.
system off and on.
AA02003
Page 4 of 6
PIN# USAGE OTHER NAME
1 Logic Power Logic Power (+BATT)
2 Logic Ground Logic Ground (-BATT)
3 Solenoid Power Dirty Power (+BATT)
4 Solenoid Power
5 Solenoid Ground Dirty Ground (-BATT)
6 Solenoid Ground
7 Solenoid S4 Drive S4
8 Not Park
9 Not used
10 Declutch Pedal Communication Input 3
11 Not used (CAN/H)
12 Variable Horsepower Drive S8
13 Solenoid S3 Drive S3
14 Not used (J1708/A)
15 Not used (J1708/B)
16 Parking Brake Communication Input 1
17 Not used (CAN/L)
18 Reverse Signal Communication Output 1
19 Forward Signal Communication Output 2
20 Solenoid S2 Drive S2
21 Solenoid S1 Drive S1
22 Solenoid S5 Drive S5
23 Solenoid S6 Drive S6
24 Neutral Start Drive S7
NOTE: Moving the shifter to park or pulling the park brake switch should apply the brake. Both are not
required to be in the park position. Illustrated below is the revised wiring to activate the parking brake
function in the shifter.
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Page 5 of 6
AA02003
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1 1439 941 H1 SCREW, MACHINE . . . . . . . . . . . . 4
2 120 392 WASHER, FLAT . . . . . . . . . . . . . 4
3 1434 783 H1 DECAL - THROTTLE . . . . . . . . . . . 1
4 1439 907 H1 COVER, CONSOLE - TOP . . . . . . . . . 1
5 1439 905 H91 SHIFTER, U-PATTERN - TRANSMISSION . . 1
6 1434 781 H1 COVER, CONSOLE - LOWER FRONT . . . . . 1
7 628 588 C1 KNOB, THROTTLE LEVER . . . . . . . . . 1
8 25 222 R1 BOLT . . . . . . . . . . . . . . . . . 4
9 1433 006 H92 LEVER, THROTTLE CONTROL . . . . . . . 1
10 25 532 R1 WASHER, FLAT . . . . . . . . . . . . . 3
11 26 110 R1 NUT, LOCK . . . . . . . . . . . . . . 2
12 152 864 CONTROLLER, THROTTLE . . . . . . . . . 1
13 1287 526 H2 ARM, THROTTLE CONTROL . . . . . . . . 1
14 25 752 R1 BOLT . . . . . . . . . . . . . . . . . 2
26 110 R1 NUT, LOCK . . . . . . . . . . . . . . 2
AA02003
