| No. | TECH 1 | Checking Conditions | Nominal Values | Trouble | Terminal |
|---|---|---|---|---|---|
| Display | Codes | ||||
| 03 | CHECK | CONNECT TEST SPARK PLUG | - | ||
| IGNITION SPARK? | After actuation of the "YES" key, | Ignition spark visible | D 4 | ||
| (YES/NO) | 2 ignitions/sec. must be triggered | at the checking spark | |||
| at the checking spark plug. | plug. |
Trouble-shooting: Nominal Value: Cause of Fault:
(If nominal value is not attained)
Ignition ON, TECH 1 in Actuator Test mode "F5", test step 03
· Measure voltage at control Alternating display · Connecting line has short circuit to ground
unit K 100 Ter. D 4 to 0.02 to 0.8 V - Connecting line has loose contact in plug
ground or K 100 Ter. D 4
(at control unit plug!) Display oscillograph · Control unit defective
image (square signal
with 2 Hz visible)
· Measure voltage at ignition Alternating display · Connecting line has lead interruption
module K 20 Ter. 4 to ground 0.02 to 0.8 V
(at ignition module plug K 20!) or
Measuring range: (20 V/AC) Display oscillograph
image (square signal
with 2 Hz visible)
· Check voltage at ignition module Primary voltage OK · Check ground connection at ignition module
with TECH 80 K 20 Ter. 1 K 20 Ter. 2 to 31
- Check voltage at ignition module K 20 Ter. 3 to 15
· Ignition module defective