Pinpoint Test A : Clutch Motors
Pinpoint Tests
Any time an electrical connector is disconnected, inspect the connector for terminal condition, corrosion and contamination. Also inspect the connector seal for damage. Clean, repair or install new as necessary.
Pinpoint Tests
Refer to Wiring Diagram Set 29 for schematic and connector information Electrical Diagrams.
PINPOINT TEST A : CLUTCH MOTORS
NOTE: Refer to the transaxle connector illustrations Transaxle Connector Layouts Transaxle Connector Layouts.
A1 TEST BJB (Battery Junction Box) FUSE 2 (50A)
- Check fuse: Battery Junction Box (BJB) fuse 2 (50A).
Is the resistance less than 5 ohms?
Yes
GO to A2.
No
REPAIR circuit SBB02 (YE/RD) for a short to ground. INSTALL a new fuse. TEST the system for normal operation. Refer to clutch test in Transmission Adaptive Learning Transmission Adaptive Learning.
A2 TEST BJB (Battery Junction Box) FUSE 32 (7.5A)
- Check fuse: BJB (Battery Junction Box) fuse 32 (7.5A).
Is the resistance less than 5 ohms?
Yes
GO to A3.
No
REPAIR circuit SBB32 (VT/RD) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
A3 TEST CJB (Central Junction Box) FUSE 23 (10A)
- Check fuse: Central Junction Box (CJB) fuse 23 (10A).
Is the resistance less than 5 ohms?
Yes
GO to A4.
No
REPAIR circuit CBP23 (BN/YE) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
A4 CHECK FOR VOLTAGE AT THE TCM (Transmission Control Module) CONNECTOR
- Ignition OFF.
- Disconnect: Transmission Control Module (TCM) C1750A.
- Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
- Measure the voltage between TCM (Transmission Control Module) C1750A-1, circuit SBB02 (YE/RD) harness side and ground.
- Measure the voltage between TCM (Transmission Control Module) C1750A-2, circuit SBB02 (YE/RD) harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to A5.
No
REPAIR circuit SBB02 (YE/RD) for an open. RECONNECT all components. TEST the system for normal operation.
A5 CHECK FOR KAM (Keep Alive Memory) VOLTAGE AT THE TCM (Transmission Control Module) CONNECTOR
- Measure the voltage between TCM (Transmission Control Module) C1750A-18, circuit SBB32 (VT/RD) harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to A6.
No
REPAIR circuit SBB32 (VT/RD) for an open. RECONNECT all components. TEST the system for normal operation.
A6 CHECK FOR IGNITION POWER AT THE TCM (Transmission Control Module) CONNECTOR
- Ignition ON.
- Measure the voltage between TCM (Transmission Control Module) C1750A-31, circuit CBP23 (BN/YE) harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to A7.
No
REPAIR circuit CBP23 (BN/YE) for an open. RECONNECT all components. TEST the system for normal operation.
A7 CHECK THE TRANSAXLE WIRING HARNESS FOR AN OPEN CIRCUIT
- Ignition OFF.
- Disconnect: TCM (Transmission Control Module) C1750B.
- Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
- Disconnect: Clutch Motor 1 C1633.
- Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
- Disconnect: Clutch Motor 2 C1634.
- Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
- If diagnosing a clutch motor 1 concern, measure the resistance between TCM (Transmission Control Module) C1750B, harness side and clutch motor 1 C1633, using the following chart.
TCM Clutch Motor 1 C1750B-58 C1633-1 C1750B-19 C1633-2 C1750B-45 C1633-3 C1750B-32 C1633-4 C1750B-57 C1633-5 C1750B-6 C1633-6 C1750B-4 C1633-7 C1750B-5 C1633-8
- If diagnosing a clutch motor 2 concern, measure the resistance between TCM (Transmission Control Module) C1750B, harness side and clutch motor 2 C1634, using the following chart.
TCM Clutch Motor 2 C1750B-55 C1634-1 C1750B-42 C1634-2 C1750B-44 C1634-3 C1750B-43 C1634-4 C1750B-56 C1634-5 C1750B-2 C1634-6 C1750B-1 C1634-7 C1750B-3 C1634-8
Is the resistance less than 5 ohms?
Yes
GO to A8.
No
REPAIR the circuit(s) for an open. RECONNECT all components. TEST the system for normal operation.
A8 CHECK THE TRANSAXLE WIRING HARNESS FOR A SHORT TO GROUND
- If diagnosing a clutch motor 1 concern, measure the resistance between TCM (Transmission Control Module) C1750B, harness side and ground using the following chart.
TCM Ground C1750B-58 Ground C1750B-19 Ground C1750B-45 Ground C1750B-32 Ground C1750B-57 Ground C1750B-6 Ground C1750B-4 Ground C1750B-5 Ground
- If diagnosing a clutch motor 2 concern, measure the resistance between TCM (Transmission Control Module) C1750B, harness side and ground using the following chart.
TCM Ground C1750B-55 Ground C1750B-42 Ground C1750B-44 Ground C1750B-43 Ground C1750B-56 Ground C1750B-2 Ground C1750B-1 Ground C1750B-3 Ground
Is the resistance greater than 10,000 ohms?
Yes
Inspect the transaxle wiring harness for signs of physical damage and repair or install a new transaxle wiring harness as necessary. TEST the system for normal operation. If the transaxle wiring harness is not damaged, GO to A9.
No
REPAIR the circuit(s) for a short to ground. RECONNECT all components. TEST the system for normal operation.
A9 CHECK THE CLUTCH MOTOR
- Remove both clutch motors. Install clutch motor 1 in the original clutch motor 2 location and install clutch motor 2 in the original clutch motor 1 location. RECONNECT all components. Clear the DTC's and TEST the system for normal operation.
Does the TCM (Transmission Control Module) set the same DTC?
Yes
INSTALL a new TCM (Transmission Control Module).
No
INSTALL a new clutch motor. TEST the system for normal operation.