Secondary Air Injection Pump Relay, Checking
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test requirements
- Secondary Air Injection (SAI) Pump Relay --J299-- fuses OK.
- Engine Control Module (ECM) Power Supply Relay -J271- and the Fuel Pump Relay -J17- fuse OK.
- Battery voltage at least 12.5 V.
- All electrical consumers switched off.
- A/C switched off.
- The ignition switched OFF.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .
Checking voltage
-- Remove the Secondary Air Injection (SAI) Pump Relay -J299-.
-- Using a multimeter, check the Secondary Air Injection (SAI) Pump Relay -J299- socket 1 (relay terminal 30) to Ground.
Specified value: Battery voltage.
If the specified value was Not obtained:
-- Check the wiring connection from the Secondary Air Injection (SAI) Pump Relay -J299- socket 1 (relay terminal 30) to the Battery positive cable for an open circuit or high resistance. Refer to Wiring Diagrams for pin locations.
-- Check the wiring connections for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
-- Using a multimeter, check the resistance of the Secondary Air Injection (SAI) Pump Relay -J299- socket 2 (relay terminal 87) to Secondary Air Injection (SAI) Pump Motor -V101- harness connector, terminal 2.
Specified value: 1.5 Ω Max.
-- Switch the ignition OFF.
If the specified value was Not obtained:
-- Check the circuit from the Secondary Air Injection (SAI) Pump Relay -J299- socket 2 (relay terminal 87) through fuse 27 (for 2009 - 2010) or fuse 21 (for 2011 >) in Fuse Box B, out to the Secondary Air Injection (SAI) Pump Motor -V101- connector, terminal 2 for an open circuit or a short circuit to Ground. Refer to Wiring Diagrams for pin locations.
-- Check the wiring for an open circuit, high resistance or a short to Battery (+) or Ground.
-- Check the electrical connections for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection and replace fuse if blown.
If the specified value was obtained:
Checking wiring
-- Remove the Engine Control Module (ECM) -J623-. Refer to the Repair information.
-- Using a multimeter, check the Secondary Air Injection (SAI) Pump Relay -J299- socket 4 (relay terminal 85) to the Engine Control Module (ECM) -J623- electrical harness connector T94 for resistance. Refer to Wiring Diagrams for pin locations.
| Secondary Air Injection (SAI) Pump Relay -J299- socket/terminal | Engine Control Module (ECM) -J623- electrical connector T94 terminal or test box socket |
|---|---|
| 4/85 | 94 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring for an open circuit, a short circuit to each other, Battery (+) or Ground.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and voltage supply was OK:
-- Replace the Secondary Air Injection (SAI) Pump Relay -J299-.
-- Erase the DTC memory.
-- Perform a road test to verify repair.
Final procedures
After 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 .