Mazda6 (3.0L)
- Resistance Inspection
Disconnect negative battery cable. Disconnect throttle body 6-pin harness connector. Using DVOM, measure resistance between throttle actuator terminals "A" and "B". See Fig 1. If resistance reading is about 80 ohms, check for open or short circuit. Go to next step. If resistance reading is not as specified, replace throttle body. - Open Circuit Inspection
Disconnect PCM 104-pin harness connector. Check for continuity between following terminals:- Throttle actuator 6-pin harness connector terminal "A" (Black/Orange wire) and PCM 104-pin harness connector terminal No. 80 (Blue/White wire) through common connector.
- Throttle actuator 6-pin harness connector terminal "B" (Green/Red wire) and PCM 104-pin harness connector terminal No. 54 (Blue/Black wire) through common connector.
If continuity is present, go to next step. If continuity is not present, repair open circuit in suspect wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.
- Short Circuit Inspection
Check for continuity between following:- Throttle actuator 6-pin harness connector terminal "A" (Black/Orange wire) and power supply.
- Throttle actuator 6-pin harness connector terminal "A" (Black/Orange wire) and ground.
- Throttle actuator 6-pin harness connector terminal "B" (Green/Red wire) and power supply.
- Throttle actuator 6-pin harness connector terminal "B" (Green/Red wire) and ground.
If continuity is present, repair short circuit in suspect wire or replace wire harness.