Secondary Air Injection Pump Relay J299, Checking

Special tools and workshop equipment required 

• Multimeter.
• Wiring diagram.

Test requirements

• Fuse -SB29- OK.
• Fuse -SB51- OK.
• The Power Supply Relay (terminal 30, B+) -J317- 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 .

Start diagnosis

-- Remove the Secondary Air Injection (AIR) Pump Relay -J299-.

Checking voltage

-- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Relay -J299- socket 1/30 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 1/30 to TV2 (terminal 30 Junction) for an open circuit, a short circuit to each other, Battery (+), and Ground (GND).

-- Check the wiring connections for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained:

-- Switch the ignition on.

-- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Relay -J299- socket 3/85 to Ground (GND) for voltage.

Specified value: battery voltage.

-- Switch the ignition off.

If the specified value was not obtained:

-- Check the wiring connection from the Power Supply Relay (terminal 30, B+) -J317- socket 87 to the Secondary Air Injection (AIR) Pump Relay -J299- socket 3/85 for an open circuit, a short circuit to each other, Battery (+), and Ground (GND).

-- Check the wiring connections for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

-- Install the test box.

If the manufacturers test box is not being used. Perform the following step.

-- Remove the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .

-- Using a Multimeter, check the Secondary Air Injection (AIR) Pump Relay -J299- socket 4/86 to the Engine Control Module (ECM) -J623- electrical harness connector T121 terminal 46 for resistance.

Secondary Air Injection (AIR) Pump Relay -J299- socket terminal	Engine Control Module (ECM) -J623- electrical connector T94 terminal or test box socket
4/86	46

Specified value: 1.5 Ω Max.

If the specification was not obtained:

-- Check the wiring for an open circuit, 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 the Secondary Air Injection (AIR) Pump Relay -J299-.

-- Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

-- Perform a road test to verify repair.

If the DTC does not return:

Repair complete, Generate readiness code. Refer to READINESS CODE DESCRIPTION .

-- End diagnosis.

If the DTC returns and no malfunction is found in the wiring and the voltage supply was OK:

-- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE J623, REPLACING .

-- 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. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .

End of diagnosis