Test Procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the engine cover with air filter. Refer to the Repair Information.
Checking voltage
-- Disconnect the Secondary Air Injection Sensor 1 -G609- electrical harness connector.
-- Switch the ignition ON.
-- Using a multimeter, check the Secondary Air Injection Sensor 1 -G609- electrical harness connector using the chart below.
| Secondary Air Injection Sensor 1 -G609- electrical harness connector terminals: | Specified value: |
|---|---|
| 1 to Battery Positive | Battery Voltage |
| 3 to Ground | near 5 V |
| 4 to ECM pin T60/55 | 1.5 Ω Max. |
-- Switch the ignition OFF.
If the specified values were obtained:
-- Replace the Secondary Air Injection Sensor 1 -G609-.
If the specified value was Not obtained:
Checking wiring connections
-- Remove the Engine Control Module (ECM) -J623-. Refer to the Repair Information.
-- Using a multimeter, check the Secondary Air Injection Sensor 1 -G609- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit. Refer to Wiring Diagrams for pin locations.
| Secondary Air Injection Sensor 1 -G609- electrical harness connector terminals: | Engine Control Module (ECM) -J623- electrical connector T60 terminals: |
|---|---|
| 1 | 13 |
| 3 | 44 |
| 4 | 55 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring for an open, high resistance or short to ground.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
-- Replace the Engine Control Module (ECM) -J623-. Refer to the Repair Information.
-- Install the engine cover with air filter. Refer to the Repair Information.