11.52
GEAR SELECTOR SWITCH
1. Locate the gear selector switch on the transmission.
Remove the wiring harness connector and insert the
multimeter probes into the switch.
2. Move the gear selector handle to each of the 5 drive
positions (HIGH, LOW, NEUTRAL, REV, or PARK).
3. Test for continuity between the switch contacts and
connector leads. Replace the switch if no continuity
or high resistance is found in any of the gear
positions.
GEAR SELECTOR RESISTOR MODULE
The resistor module relays a different resistance reading
to the ECM depending on which gear is selected by the
operator. If the module fails, the ECM will not be able to
determine what gear the transmission is in.
1. Disconnect the ECM harness connector from the
ECM. Locate pins 23 (WHITE) and 30 (VIOLET).
2. Set the multimeter to register OHMS (resistance).
Insert the RED probe into pin 23 and the BLACK
probe into pin 30.
3. Reference the Resistance Table for specifications. If
any of the tests fail, replace the resistor module.
MODULE RESISTANCE ±5%
GEAR POSITION
RESISTANCE (Ω)
HIGH 620
LOW 300
NEUTRAL 160
REVERSE
75
PARK 24
ELECTRICAL
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