Secondary Air Injection Pump Motor, Checking

Secondary Air Injection Pump Motor, Checking

Special tools, testers and auxiliary items required
- Multimeter.
- Wiring diagram.

Test requirements
- Secondary Air Injection (AIR) Pump Relay J299 OK.
- Fuel Pump (FP) Relay J17 OK.
- 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. General Diagnosis

Start diagnosis







- Disconnect the secondary air injection hose - arrow -.







- Remove the center noise insulation fasteners -1, 2, 3, 4 - and the center noise insulation panel.







- Disconnect the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector - 3 -.

Checking voltage
- Start engine momentarily.







- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector terminals 1 to 2 for voltage.
- Switch the ignition off.

Specified value: battery voltage.

If the specified value was not obtained:







- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector terminal 2 to Ground (GND).

Specified value: battery voltage.

If the specified value was not obtained:
- Check the wiring connection from the Secondary Air Injection (AIR) Pump Relay J299 socket 2/87 to the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector terminal 2 for an open circuit or a short circuit.
- 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 Ground (GND)







- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector terminal 1 to Ground (GND) connection 2 (on left front long member) for resistance.

Specified value: 1.5 Ohms Max.

If the specification was not obtained:
- Check the Secondary Air Injection (AIR) Pump Motor V101 electrical harness connector terminal 1 to Ground (GND) connection 2 (on left front long member) for a short circuit to each other, Battery (+), and Ground (GND).
- 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 Secondary Air Injection (AIR) Pump Motor V101.
- Erase the DTC memory. Diagnostic Mode 04 - Erase DTC Memory
- Perform a road test to verify repair.

If the DTC does not return:

Repair complete, Generate readiness code. Readiness Code
- End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was not OK:
- Replace the Secondary Air Injection (AIR) Pump Relay J299.
- Assembly is performed in the reverse of the removal.

Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code.

End of diagnosis.