TCCS Resistance Tests
The TCCS can be checked using an ohmmeter. Before making resistance tests, turn ignition off and disconnect wiring connectors at ECU. Insert ohmmeter probes into wiring connectors from wire side. Measure resistance at connector terminals, NOT at ECU terminals.
TCCS TROUBLE CODE IDENTIFICATION
| Code No. (Pattern) | Circuit Affected |
|---|---|
| 1 | System normal |
| 2 | Airflow Meter signal |
| 3 | Ignition signal |
| 4 | Coolant Temperature signal |
| 5 | Oxygen Sensor signal |
| 6 | RPM signal |
| 7 | TPS signal |
| 8 | Intake Air Temperature signal |
| 9 | Vehicle Speed Sensor signal |
| 10 | Starter signal |
| 11 | A/C switch or Neutral/Start Switch signal |
| 12 | Knock Sensor signal |
| 13 | Knock CPU (ECU) |
| 14 | Turbocharger Pressure |
TROUBLE CODES & PROBABLE CAUSE
| Code No. | Probable Cause |
|---|---|
| 1 | System Normal |
| 2 | Airflow Meter or Circuit, ECU |
| 3 | Ignitor or Circuit, ECU |
| 4 | Water Thermo Sensor or Circuit, ECU |
| 5 | Oxygen Sensor or Circuit, ECU |
| 6 | Ignitor or Circuit, Distributor, ECU |
| 7 | Throttle Position Sensor or Circuit, ECU |
| 8 | Intake Air Temp. Sensor or Circuit, ECU |
| 9 | Vehicle Speed Sensor or Circuit |
| 10 | Vehicle Speed Sensor or Circuit Main Relay or Circuit, Ignition Circuit, Starter Circuit, ECU |
| 11 | A/C Switch, Throttle Position Sensor or Circuit, ECU |
| 12 | Knock Sensor or Circuit, ECU |
| 13 | Knock Control CPU, ECU |
| 14 | Turbocharger, Airflow Meter, ECU |