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Fault code 0907: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING CHART

Work instruction Display OK If not OK
1 Check battery: Battery okay.
Go to Step 2		 Battery not OK.
→ Replace battery.
→ End
2 Check charge voltage/current on three-phase generator:
  • Vehicle engine speed approx. 2000 1/min.
 11.4 - 14.4 V
Go to Step 3		 Wiring/regulator or diodes faulty. Repair wires or generator.
→ End
3 Check DF line for short circuit to B+:
  • Switch off the ignition.
  • Pull out plug 'A' on SME control module.
  • Pull out plug 'A' on generator.
  • Switch on ignition.
  • Measure voltage in SME control module plug 'A' 'Pin 28' to ground.
 < 0.3 V
Go to Step 4		 Repair / replace wiring harness
→ End
4 Check DF line for short circuit to ground:
  • Switch off the ignition.
  • Measure resistance in SME control module plug 'A' 'Pin 28' to ground.
 ∞ Ω
Go to Step 5		 Repair / replace wiring harness
→ End
5 Check DF line for open circuit:
  • Measure resistance between SME control module plug 'A' 'Pin 28' and generator plug 'A' 'Pin 2'.
 < 5 Ω
Go to Step 6		 Repair / replace wiring harness
→ End
6 CAN test: → End
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