Test Step 05 — Opel Tigra A (1995-2000)

Test Step 05 Opel Tigra A

Test	Tester	Check			Notes	Nominal
Step	Multimeter MKM-587-A	of	between			Value
05	Ohmmeter	Passage check	S24/Ter. 1 (6)	S24/Ter. 2 (5)	· Disconnect wiring	» 1.5 W
	range 200 W	of series resistors, AC	K26/Ter. 87 (8)	S24/Ter. 2 (5)	harness plug from switch S24 *)	» 1.5 W
		fan motor M10	S24/Ter. 2 (5)	S24/Ter. 3 (4)	· Measure at wiring	» 1.0 W
		with feed leads, 1st, 2nd, 3rd, 4th speeds
	S24/Ter. 3 (4)	K7/Ter. 87 (8)	harness plug of switch S24

· Disconnect relay K26 **)

· Disconnect relay K7 **)

» 0.5 W
Voltmeter range 20 V, DC	Voltage supply, AC fan motor M10
K7/ Ter. 8 (2) and Ter. 30 (4)	Ground	· Ignition ON

· Wiring harness plug connected to S24, switch in position 4

» 11,5 V
Ohmmeter range 200 W	Wiring harness plug M10 (5)	Ground	· Ignition OFF

· Disconnect wiring harness plug from motor M10.***)

» 0 W
Possible cause of fault, trouble-shooting

1. Lead interruption between AC fan motor M10 (1) and AC fan motor switch S24/Ter. 1 (6).

2. Lead interruption between AC fan motor M10 (1) and radiator fan relay and AC fan motor, 1st speed, K26/Ter. 87 (8).

3. Lead interruption between AC fan motor M10 (2) and AC fan motor switch S24/Ter. 2 (5).

4. Lead interruption between AC fan motor M10 (4) and AC fan motor switch S24/Ter. 3 (4).

5. Lead interruption between AC fan motor M10 (3) and AC fan motor relay, 4th speed, K7/Ter. 87 (8).

6. Lead interruption between AC fan motor M10 (5) and grounding point 2.

7. AC relay K6 defective - see test step 07.

8. AC fan motor relay, 4th speed, K7 defective - see test step 09.

9. Series resistor defective.

10. AC fan motor M10 defective.

*) For this, detach heating/AC controls and pull forwards

**) For this, remove glove compartment and detach relay frame beside glove compartment

***) Wiring harness plug on air distributor housing in left footwell

( ) Terminal in wiring harness plug

Test Step 05 Opel Tigra A