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F0: Data List - Test Step 18 Sec.air Pump Rel Opel Omega B

Fuel Injection Systems ~314 words

FO: DATA LIST

No.	TECH 1 Display	Conditions for Checking	Nominal Value	Trouble Codes	Terminal
18	SEC. AIR PUMP REL	C 18 XE (without secondary air injection)

X 20 XEV:

- Engine cold, engine running at idle speed, partial load, not full load

- Engine running at idle speed, operating temperature

Alternative check,

if engine is already warm:

- Engine warm, disconnect coolant temperature sensor

- Restart engine

NOT USED

ACTIVE

0 V

INACTIVE

12 V

ACTIVE

0 V

46, 47

44, 41

Note: If the coolant temperature sensor is disconnected, a trouble code is set when the engine is switched off.

This must be deleted the next time the engine is started.

First check secondary air injection relay K12 with F5: ACTUATOR TEST, no. 07. If the results of this test are negative, proceed with troubleshooting as described below.

Notes on Trouble - shooting:

Nominal Value:

Cause of Fault:

Omega - B:

· Disconnect secondary air injection relay K12 from relay base. Ignition On.

Using multimeter, measure voltage at relay base K12 to ground
- to Ter. 4 (Ter. 86)	greater than 11.5 V	· Interruption or short circuit to ground in lead connection from control unit K69 / Ter. 46 or from reverse battery protection relay K42 / Ter. 8 (Ter. 87) via plug connection X30 / Ter. 6 to secondary air injection relay K12 / Ter. 4

- to Ter. 8 (Ter. 87)

· Ignition Off. Disconnect wiring harness plug from control unit K69. Ignition On.

Using multimeter, check connection between wiring harness plug K69 / Ter. 44 and relay base K12 / Ter. 6 (Ter. 85)	greater than 11.5 V	· Fuse F49 defective
· Interruption in lead from relay Kl 2 / Ter. 8 (Ter. 87) to + battery voltage

- for passage,

- for short circuit to ground,

- for short circuit to + battery voltage

Passage

¥ W

0 V	· Interruption, short circuit to ground or to positive terminal in lead connection from control unit K69 / Ter. 44 via plug connection X 30 / Ter. 1 to secondary air injection relay K12 / Ter. 6 (Ter. 85)
· Ignition Off. Using multimeter, measure voltage and resistance between relay base K12 / Ter. 2 (Ter. 30) and ground	0 V, approx. 7 W	· Interruption or short circuit to ground or positive terminal in lead connection from relay base K12 / Ter. 2 (Ter. 30) to

- secondary air injection solenoid valve Y15

- secondary air pump motor M27

· Interruption in lead connection from

- secondary air injection solenoid valve

- secondary air pump motor M27 to ground

Further possible faults:

Vectra / Cavatier, Calibra:

· Disconnect secondary air injection relay K12 from relay base. Ignition On.

Using multimeter, measure voltage at relay base K12 to ground

· Secondary air injection relay K12 defective

· Secondary air injection solenoid valve defective

· Secondary air pump motor M27 defective
- to Ter. 4 (Ter. 86)	greater than 11.5 V	· Interruption or short circuit to ground in lead connection from control unit K69 / Ter. 46 or from fuel pump relay K68 / Ter. 8 (Ter. 87) via plug connection X57 to secondary air injection relay K 12 / Ter. 4

- an Kl. 8 (Kl.87)

Ignition Off. Disconnect wiring harness plug from control unit K69. Ignition On.

Using multimeter, check connection between wiring harness plug K69 / Ter. 44 and relay base K12 / Ter. 6 (Ter. 85)

greater than 11.5 V

· Fuse F49 defective

· Interruption in lead from relay Kl 2 / Ter. 8 (Ter. 87) to + battery voltage