Component Testing
WARNING: This page is about a different variant/trim than selected.
TCSCS - Mode Switch Circuit
- Key OFF. Remove the TCSCS.
- Using the L-BU probes J 35616-65, measure the resistance for each of the mode positions of the TCSCS between the 5-volt reference circuit, TCSCS X1 pin 11, and the switch signal circuit TCSCS X1 pin 12.
- If the resistance is outside the specified ranges, replace the TCSCS.
- Test the TCCM for proper operation.
| Mode | Range | Nominal |
|---|---|---|
| 2WD HI | 1475-1550 ohms | 1515 ohms |
| AWD/4WD Auto | 110-175 ohms | 140 ohms |
| 4WD HI | 625-700 ohms | 665 ohms |
| 4WD LO | 2300-2400 ohms | 2345 ohms |
| Neutral | 1000-1050 ohms | 1020 ohms |
TCCM - Mode Switch Circuit
- Key ON, engine OFF. Install the TCSCS.
- Using the Data Display feature of the scan tool, monitor the Mode Switch Supply and Return Voltages while turning the TCSCS through each mode.
- If the voltage is less than the specified value, test the affected circuit for an open/high resistance, short to ground or short together. If all circuits and connections test normal, reprogram the TCCM. If the DTC resets replace the TCCM.
- If the voltage is greater than the specified value, test the affected circuit for a short to voltage. If all circuits and connections test normal, reprogram the TCCM. If the DTC resets replace the TCCM.
- Perform the Circuit/System Testing.
| Mode | Mode Switch Supply Voltage | Mode Switch Return Voltage | Rotational Position Sensor | |
|---|---|---|---|---|
| Range | Nominal | |||
| 2WD HI | 4.9-5.0 V | 1.80-2.18 V | 1.97 V | 37° |
| AWD/4WD Auto | 4.9-5.0 V | 4.10-4.59 V | 4.38 V | 102° |
| 4WD HI | 4.9-5.0 V | 2.78-3.22 V | 3.00 V | 124° |
| 4WD LO | 4.9-5.0 V | 1.33-1.67 V | 1.50 V | -76° |
| Neutral | 4.9-5.0 V | 2.27-2.68 V | 2.47 V | 0° |