exhaust

Secondary Air Injection Pump

for 2012 Toyota Camry 2.5L I4 · FWD

Difficulty

Moderate

Time

1.5 h

Tools

Steps

🤖AI-generated, not yet human-verified. This walkthrough was produced by AI and may contain errors. Treat it as a guide, cross-check every step and torque value against the manufacturer's service manual, and stop if anything looks unsafe. This is a moderate-risk job — take extra care.

This procedure covers the removal and replacement of the secondary air injection pump on a 2012-2017 Toyota Camry with the 2.5L I4 engine.

Warnings

⚠Allow engine to cool completely before beginning work to avoid burns from hot components

⚠The secondary air injection pump is located near exhaust components which retain heat for extended periods

ℹ️This vehicle may set a check engine light immediately if the pump is disconnected with the ignition on

Tools required

10mm socket and ratchetEssential

12mm socket and ratchetEssential

14mm socket and ratchetEssential

Extension setEssential

Torque wrenchEssential

Flathead screwdriver

Anti-seize compoundEssential

Shop towels

Jack and jack standsEssential

Wheel chocksEssential

Parts

Secondary air injection pump × 1 — Use OEM specification
Air pump mounting gasket × 1 — Use OEM specification
Air injection tube gasket × 1 — Use OEM specification

Preparation

Ensure engine is completely cool to the touch
Park vehicle on level surface and apply parking brake
Place wheel chocks behind rear wheels
Disconnect negative battery terminal and wait 3 minutes
Raise front of vehicle and support securely on jack stands
Remove right front wheel for improved access
Remove engine under cover if equipped

Procedure

1
Remove right front fender liner
Remove the plastic clips and screws securing the right front fender liner. Pull the liner back to expose the secondary air injection pump area. The pump is mounted low on the right side of the engine bay near the frame rail.
2
Disconnect electrical connector
Locate the electrical connector on the secondary air injection pump. Press the release tab and pull the connector straight off the pump. Inspect connector terminals for corrosion or damage.
3
Remove air inlet hose
Loosen the hose clamp securing the air inlet hose to the pump intake. Twist and pull the hose off the pump. This hose connects from the air filter housing to the pump inlet.
4
Remove air outlet tube connection
Locate the metal air injection tube connecting the pump outlet to the exhaust manifold check valve. Remove the flange bolts securing this connection at the pump outlet. Note the position of any brackets or clips.
Torque spec
Exhaust Flange Bolts45 Nm (33 lb-ft)
5
Remove pump mounting bolts
Remove the mounting bolts securing the secondary air injection pump to its bracket. There are typically two or three bolts holding the pump to the mounting bracket. Support the pump while removing the final bolt.
Torque spec
Mounting Bolts27 Nm (20 lb-ft)
6
Remove pump assembly
Carefully maneuver the pump assembly out from its mounting location. You may need to angle it to clear surrounding components. Remove the old mounting gasket from the pump bracket and clean the mating surface with a shop towel.
7
Prepare new pump for installation
Compare the new pump to the old unit to verify correct replacement part. Install the new mounting gasket onto the pump or bracket as applicable. Verify the outlet flange gasket is in place on the new pump.
8
Install new pump assembly
Position the new secondary air injection pump into the mounting bracket, ensuring the gasket is properly seated. Start all mounting bolts by hand before tightening any. Torque mounting bolts to specification in a cross pattern.
Torque spec
Mounting Bolts27 Nm (20 lb-ft)
9
Reconnect air outlet tube
Position the air injection tube to the pump outlet flange, ensuring the gasket is properly aligned. Install flange bolts and torque to specification. Verify any brackets or clips are properly positioned.
Torque spec
Exhaust Flange Bolts45 Nm (33 lb-ft)
10
Reconnect air inlet hose and electrical
Push the air inlet hose onto the pump intake and secure with the hose clamp. Connect the electrical connector to the pump until it clicks into place. Tug gently to verify it is locked.
11
Reinstall fender liner and wheel
Reposition the fender liner and secure all clips and screws. Install the right front wheel and torque lug nuts to 110 Nm (80 lb-ft) in a star pattern. Reinstall engine under cover if equipped.

Reassembly

Verify all electrical connections are fully seated and locked
Ensure all hose connections are tight and properly clamped
Double-check that all mounting bolts are torqued to specification
Reconnect negative battery terminal

Verification

Start the engine and listen for unusual noises from the pump area during the first few seconds of operation when the pump runs
Verify the check engine light does not illuminate after starting
Allow engine to reach operating temperature and confirm no air leaks are present at pump connections
Use a scan tool to verify no secondary air injection system codes are present
Perform a test drive and verify normal operation with no warning lights