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Sensing system Shift position sensor - Short circuit to ground
(C.20.B.95.81 - G.30.B.53)
AFX8010
E0130-04 - Trans Shift Position 2 Sensor
Cause:
The transmission shift position sensor B-37 "2" circuit is shorted to ground.
Possible failure modes:
1.
Sensor supply wiring shorted to ground.
2.
Controller internal failure (internal regulator failure).
Solution:
1.
Enter the Universal Display Plus "DIAG" screen. Select the "TRANSMISSION" sort menu, and select "POS 2
SEN" to check the voltage range. The proper voltage when in shift position 2 is 5.6 - 7.3 volts. The proper
voltage when not in shift position 2 is 0.5 - 5.6 volts.
A.
If the voltage reading is low (<0.5 volts) out of range, continue with step 2.
B.
If the voltage reading is within the proper limits, continue the troubleshooting at step 4.
NOTE: Visually inspect the wiring harness and connectors. Verify that the connector is fully installed. Inspect
the terminals and wires at the connector for pushed back or corroded terminals or damaged wires. Flex the
harnesses involved to reveal intermittent breaks or shorts in the wiring concerned.
2.
Disconnect the transmission shift position sensor connector X093 at the transmission. The voltage indicated
should be 7.3 - 9 volts.
A.
If the voltage increases to 7.3 - 9 volts, the short is in the sensor or sensor wiring. Replace the sensor.
B.
If the voltage remains low (<0.5 volts) out of range, continue with step 3.
3.
Disconnect the lower frame (LF) harness from the front frame (FF) harness at connector X023.
A.
If the voltage increases to 7.3 - 9 volts, there is a short to ground in the lower frame (LF) harness
between connector X023 pin 9 and connector X093 pin 3 wire 406 yellow. Locate the short and repair.
B.
If the voltage remains low (<0.5 volts) out of range, there is a short to ground in the front frame
(FF) harness between connector X023 pin 9 and connector X017 pin J3-37 wire 406 yellow. Locate
the short and repair.
4.
Operate the transmission shift gear switch to change the transmission gears, and monitor the "POS 2 SEN"
voltage readings on the Universal Display Plus.
A.
If a low (<0.5 volts) out of range voltage reading is now viewed, continue the troubleshooting at step 2.
B.
If a low (<0.5 volts) out of range voltage reading cannot be generated, clear the fault code and continue
operation.
POWER TRAIN - TRANSMISSION Mechanical
9680 1 27/05/2004
C.20.B / 121
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