Variable Induction Control Solenoid: Testing and Inspection
VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SOLENOID VALVE INSPECTIONAirflow Inspection
NOTE: Perform the following test only when directed.
1. Remove the VTCS solenoid valve.
2. Inspect for airflow between each port under the following condition.
- If as specified but the Simulation Test is failed, inspect for the following and carry out the "Circuit Open/Short Inspection". Vacuum hose improper routing, kinks or leakage.
- If not as specified, replace the VTCS solenoid valve.
Circuit Open/Short inspection
Open circuit
- Power circuit (VTCS solenoid valve connector terminal A and main relay connector terminal D through common connector)
- GND circuit (VTCS solenoid valve connector terminal B and PCM connector terminal 2N)
Short circuit
- VTCS solenoid valve connector terminal A and main relay connector terminal D through common connector to GND
VARIABLE TUMBLE CONTROL SYSTEM (VTCS) VACUUM SWITCH INSPECTION
Operation Inspection
1. Disconnect the negative battery cable.
2. Disconnect the vacuum hose from the VTCS vacuum switch.
3. Connect a vacuum pump to the VTCS vacuum switch.
4. Apply vacuum slowly and verify that continuity between the VTCS vacuum switch terminals changes as indicated in the table using an ohmmeter.
- If not as specified, replace the VTCS vacuum switch.
- If VTCS vacuum switch is okay but PID value is out of specification, perform the "Circuit Open/Short inspection".
5. Reconnect the VTCS vacuum switch connector.
Circuit Open/Short Inspection
Open circuit
- If there is no continuity, the circuit is open, Repair or replace the harness.
- Power circuit (VTCS vacuum switch connector terminal A and PCM connector terminal 4J through common connector)
- GND circuit (VTCS vacuum switch connector terminal B and GND through common connector)
Short circuit
- If there is no continuity, the circuit is shorted. Repair or replace the harness.
- VTCS vacuum switch connector terminal A and PCM connector terminal 4J through common connector to GND.