Pinpoint Test B: TCS Does Not Operate Correctly
External Controls
Pinpoint Tests
PINPOINT TEST B: TCS DOES NOT OPERATE CORRECTLY
-------------------------------------------------
B1 TEST THE IC
- Connect the scan tool.
- Using the scan tool, monitor the TCS PID while cycling the Transmission Control Switch (TCS).
- Does the TCS PID cycle from closed to open?
Yes
REFER to Instrument Panel, Gauges and Warning Indicators.
No
GO to B2.
-------------------------------------------------
B2 CHECK SJB FUSE 30 (5A)
- Ignition OFF.
- Check fuse: Smart Junction Box (SJB) Fuse 30 (5A).
- Is the resistance less than 5 ohms?
Yes
GO to B3.
No
GO to B4.
-------------------------------------------------
B3 TEST THE TCS POWER CIRCUIT FOR AN OPEN
- Disconnect: Selector Lever Harness C3245.
- Disconnect: SJB Fuse 30 (5A).
- Measure the resistance between selector lever harness C3245-6, circuit CBP30 (YE/BU) and the output side of SJB fuse 30 (5A).
- Is the resistance less than 5 ohms?
Yes
GO to B5.
No
REPAIR circuit CBP30 (YE/BU). RECONNECT all components. TEST the system for normal operation.
-------------------------------------------------
B4 TEST THE TCS POWER CIRCUIT FOR A SHORT TO GROUND
- Disconnect: Selector Lever Harness C3245.
- Disconnect: SJB Fuse 30 (5A).
- Measure the resistance between selector lever harness C3245-6, circuit CBP30 (YE/BU) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to B6.
No
REPAIR circuit CBP30 (YE/BU) for a short to ground. RECONNECT all components. TEST the system for normal operation.
-------------------------------------------------
B5 TEST THE TCS SIGNAL CIRCUIT FOR AN OPEN
- Disconnect: PCM C175B.
- Measure the resistance between selector lever harness C3245-5, circuit CET34 (BN/GN) and PCM C175B-16, circuit CET34 (BN/GN).
- Is the resistance less than 5 ohms?
Yes
GO to B7.
No
REPAIR circuit CET34 (BN/GN) for an open. RECONNECT all components. TEST the system for normal operation.
-------------------------------------------------
B6 TEST THE TCS SIGNAL CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance between selector lever harness C3245-5, circuit CET34 (BN/GN) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to B7.
No
REPAIR circuit CET34 (BN/GN) for a short to ground. TEST the system for normal operation.
-------------------------------------------------
B7 TEST THE TCS
- Measure the resistance between selector lever C3245-5 and C3245-6, component side, while cycling the TCS.
- Is the resistance less than 5 ohms when pressed and greater than 10,000 ohms when released?
Yes
INSTALL a new PCM. TEST the system for normal operation.
No
INSPECT the selector lever wiring harness for damage and REPAIR as necessary. If the selector lever wiring harness is not damaged, INSTALL a new selector lever knob. REFER to Selector Lever Knob Selector Lever Knob. TEST the system for normal operation.
-------------------------------------------------