Secondary Air Injection Sensor 1, Checking
Special tools and workshop equipment required
- Multimeter
- Wiring diagram.
Test requirements
- The Engine Control Module (ECM) - J623- fuses OK.
- The battery voltage at least 12.5 V.
- All electrical consumers switched off (radiator fan must NOT run during test).
- A/C switched Off.
- The ignition switched Off.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the engine cover.
Checking voltages and grounds
-- Disconnect the Secondary Air Injection Solenoid Valve -N112- electrical harness connector.
-- Switch the ignition On.
-- Using a multimeter, check the Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals for voltages and grounds.
| Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals: | Measure to: | Specified value: |
|---|---|---|
| 1 | Ground | Battery voltage |
| 2 | Ground | near 5 V |
| 4 | Battery voltage | Battery voltage |
-- Switch the ignition Off.
If the specified value was Not obtained:
Checking wiring
-- Remove the Engine Control Module (ECM) -J623-.
-- Using a multimeter, check the Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T105 terminals for an open circuit according to the wiring diagram.
| Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals: | Engine Control Module (ECM) -J623- electrical harness connector T105 terminals or the appropriate fuse. Refer to applicable wiring diagram for fuse positions: |
|---|---|
| 1 | The appropriate fuse. Refer to applicable wiring diagram for fuse positions |
| 2 | 35 |
| 4 | 33 |
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 the specified value was obtained:
Checking wiring
-- Remove the Engine Control Module (ECM) -J623-.
-- Using a multimeter, check the Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T105 terminals for an open circuit according to the wiring diagram.
| Secondary Air Injection Solenoid Valve -N112- electrical harness connector terminals: | Engine Control Module (ECM) -J623- electrical connector T105 terminals: |
|---|---|
| 3 | 9 |
| 5 | 21 |
If the specified value was obtained:
-- Replace the Secondary Air Injection Solenoid Valve -N112-.
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 and the voltage supply was Not OK:
-- Replace the Engine Control Module (ECM) -J623-.
-- Install the engine cover with air filter.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .