Notice: Lack of basic knowledge of this powertrain when performing diagnostic
procedures could result in incorrect diagnostic performance or damage to powertrain
components. Do not attempt to diagnose a powertrain problem without this basic
knowledge.
Throttle Position Sensor
| • | Provides throttle position data to the transmission control module (TCM)
for determining shift patterns and torque converter clutch (TCC) apply/release. |
| • | An incorrect throttle position (TP) sensor input could causes erratic
or shift pattern, poor shift quality, or TCC function. |
Automatic Transaxle Output (Shaft) Speed Sensor
| • | Provides vehicle speed data to the TCM for determining shift patterns
and TCC apply/release and gear ratio calculations. |
| • | An incorrect throttle position sensor input could cause erratic or shift
pattern, poor shift quality, or TCC function. |
Automatic Transaxle Input (Shaft) Speed Sensor
Provides transaxle input speed data to the TCM for determining shift patterns
and TCC apply/release and gear ratio.
Engine Coolant Temperature Sensor
| • | Provides coolant temperature data to the TCM for determining initial TCC
engagement. |
| • | An incorrect engine coolant temperature sensor input could cause an incorrect
initial TCC apply. |
Engine Speed
| • | The ignition module provides engine speed data to the TCM. |
| • | The TCM uses engine speed information for controlling wide open throttle
(WOT) shifts and the TCC pulse width modulation (PWM) solenoid duty cycle. |
Stop Lamp Switch
| • | Provides brake apply information to the TCM for controlling TCC apply
and release. |
| • | An incorrect TCC stop lamp switch input could cause an incorrect TCC apply
or release. |
Transaxle Fluid Temperature (TFT) Sensor
| • | Provides transaxle fluid temperature information to the TCM for determining
alternate shift patterns and TCC apply during high temperature conditions hot mode
operation. |
| • | An incorrect transaxle temperature sensor input could cause altered shift
patterns, poor shift quality, and incorrect TCC apply. |
