Pinpoint Test F: Intermediate Shaft Speed Sensor and OSS Sensor
Pinpoint Tests - OSC Equipped Vehicle
PINPOINT TEST F: INTERMEDIATE SHAFT SPEED SENSOR AND OSS SENSOR
NOTE: Refer to the Intermediate Shaft Speed Sensor and Output Shaft Speed (OSS) Sensor Connector illustrations Transaxle Connector Layouts Transaxle Connector Layouts.
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F1 ELECTRONIC DIAGNOSTICS SETUP
- Check to make sure the transaxle harness connectors are fully seated, terminals are fully engaged in connector and in good condition before proceeding.
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger Mode.
- Select the intermediate shaft speed or OSS sensor PID.
- Does vehicle enter DataLogger Mode?
Yes
REMAIN in DataLogger Mode. GO to F2 .
No
REPEAT procedure to ENTER DataLogger Mode. If vehicle did not enter DataLogger Mode, REFER to Computers and Control Systems Information for diagnosis of Transmission Control Module (TCM).
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F2 DRIVE CYCLE TEST
- Start the engine.
- While monitoring the appropriate sensor PID, drive the vehicle so that the transaxle upshifts and downshifts through all gears.
- Does the intermediate shaft speed or OSS sensor PID increase and decrease with engine and vehicle speed?
Yes
GO to F3.
No
If the intermediate shaft speed or OSS sensor PID does not increase and decrease with engine and vehicle speed, INSPECT for open or short in vehicle harness, sensor, a TCM concern, or internal hardware concern. GO to F4 .
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F3 DRIVE CYCLE TEST ERRATIC
- While monitoring the appropriate sensor PID, drive the vehicle so that the transaxle upshifts and downshifts through all gears.
- Is the intermediate shaft speed or OSS sensor PID signal erratic (drop to zero or near zero and return to normal operation)?
Yes
If the sensor signal is erratic, INSPECT for intermittent concern in the harness, sensor or connector. GO to F4 .
No
CLEAR all DTCs. RERUN On-Board Diagnostic (OBD).
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F4 CHECK THE SENSOR BATTERY SUPPLY CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: Intermediate Shaft Speed Sensor C1088.
- Disconnect: OSS Sensor C193.
- Disconnect: TCM C2352A.
- For intermediate shaft speed sensor, measure the resistance between sensor C1088-3, circuit CE613 (WH/VT) and ground.
- For OSS, measure the resistance between OSS sensor C193-3, circuit CE613 (WH/VT) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F5.
No
REPAIR the circuit for a short to ground. TEST the system for normal operation.
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F5 CHECK THE SENSOR BATTERY SUPPLY CIRCUIT FOR AN OPEN
- For intermediate shaft speed sensor, measure the resistance between intermediate shaft speed sensor C1088-3, circuit CE613 (WH/VT) and the TCM C2352A-10, circuit CE613 (WH/VT).
- For the OSS sensor, measure the resistance between OSS sensor C193-3, circuit CE613 (WH/VT) and TCM C2352A-10, circuit CE613 (WH/VT).
- Is the resistance less than 5 ohms?
Yes
GO to F6.
No
REPAIR the circuit for an open. TEST the system for normal operation.
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F6 CHECK THE GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between OSS sensor C193-1, circuit GD120 (BK/GN) and ground.
- Disconnect: C2352B.
- Measure the resistance between intermediate shaft speed sensor C1088-1, circuit VET28 (GY/VT) and TCM C2352B-5, circuit VET28 (GY/VT).
- Is the resistance less than 5 ohms?
Yes
If repairing an intermediate shaft speed sensor concern, GO to F7. If repairing an OSS sensor concern, GO to F8.
No
REPAIR the sensor ground circuit for an open. TEST the system for normal operation.
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F7 CHECK THE INTERMEDIATE SHAFT SPEED SENSOR GROUND CIRCUIT FOR A SHORT TO GROUND
- Disconnect: Transaxle Main Valve Body Vehicle Harness C1534.
- Disconnect: TR Sensor C1537.
- Measure the resistance between intermediate shaft speed sensor C1088-1, circuit VET28 (GY/VT) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F8.
No
REPAIR the sensor ground circuit for a short to ground. TEST the system for normal operation.
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F8 CHECK THE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
- For OSS sensor, measure the resistance between OSS sensor C193-2, circuit VET26 (BN/GN) and ground.
- For intermediate shaft speed sensor, measure the resistance between intermediate shaft speed sensor C1088-2, circuit VE822 (YE/BU) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F9.
No
REPAIR the circuit for a short to ground. TEST the system for normal operation.
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F9 CHECK THE SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER
- For OSS sensor, measure the voltage between OSS sensor C193-2, circuit VET26 (BN/GN) and ground.
- For intermediate shaft speed sensor, measure the voltage between intermediate shaft speed sensor C1088-2, circuit VE822 (YE/BU) and ground.
- Is any voltage present?
Yes
REPAIR the circuit for a short to power. TEST the system for normal operation.
No
GO to F10.
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F10 CHECK THE SENSOR SIGNAL CIRCUIT FOR AN OPEN
- Disconnect: TCM C2352b.
- For the OSS sensor, measure the resistance between OSS C193-2, circuit VET26 (BN/GN) and TCM C2352B-17, circuit VET26 (BN/GN).
- For the intermediate shaft speed sensor, measure the resistance between intermediate shaft speed sensor C1088-2, circuit VE822 (YE/BU) component side and TCM C2352B-19, circuit VE822 (YE/BU).
- Are the resistances less than 5 ohms?
Yes
GO to F11.
No
REPAIR the circuit for an open. TEST the system for normal operation.
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F11 CHECK FOR VOLTAGE AT THE SENSOR
- Connect: TCM C2352A.
- Connect: TCM C2352B.
- Ignition ON.
- Measure the voltage between OSS sensor C193-2, circuit VET26 (BN/GN) and ground.
- Measure the voltage between intermediate shaft speed sensor C1088-2, circuit VE822 (YE/BU) and ground.
- Is the voltage approximately 5 volts?
Yes
INSTALL a new sensor. TEST the system for normal operation.
No
INSTALL a new TCM. TEST the system for normal operation.
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