DaimlerChrysler Jeep Grand Cherokee 2002, Service Manual

Page: 166 / 284

Symptom List:
P0836-TRANSFER CASE POSITION SENSOR PLAUSIBILITY
P0836-TRANSFER CASE POSITION SENSOR PLAUSIBILITY 2
P0836-TRANSFER CASE POSITION SENSOR SIGNAL VOLTAGE
TOO HIGH
P0836-TRANSFER CASE POSITION SENSOR SIGNAL VOLTAGE
TOO LOW
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0836-TRANSFER CASE POSI-
TION SENSOR PLAUSIBILITY.
When Monitored and Set Condition:
P0836-TRANSFER CASE POSITION SENSOR PLAUSIBILITY
When Monitored: When the ECM detects the transfer case in 4WD low.
Set Condition: The ECM detects a vehicle speed that is higher than is possible in 4WD
low.
P0836-TRANSFER CASE POSITION SENSOR PLAUSIBILITY 2
When Monitored: With the ignition on.
Set Condition: The ECM detects a voltage signal from the transfer case switch that does
not fall into a valid switch position voltage range.
P0836-TRANSFER CASE POSITION SENSOR SIGNAL VOLTAGE TOO HIGH
When Monitored: With the ignition on.
Set Condition: The Transfer Case Position Sensor Signal circuit voltage is above 3.0 volts.
P0836-TRANSFER CASE POSITION SENSOR SIGNAL VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The Transfer Case Position Sensor Signal circuit voltage is below 0.12
volt.
POSSIBLE CAUSES
CHECKING THE TRANSFER CASE POSITION SENSOR
INTERMITTENT WIRING AND CONNECTORS
TRANSFER CASE POSITION SENSOR SIGNAL CIRCUIT OPEN
TRANSFER CASE POSITION SENSOR SIGNAL CIRCUIT SHORT TO GROUND
TRANSFER CASE POSITION SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
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DRIVEABILITY - DIESEL
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