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Home >> Mercedes Benz >> 1996 >> SL320 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control -- 129 Chassis >> Self-Diagnostic System >> Stationary heater test of electrical system - AD83.70-P-6001 >> Stationary heater/heater booster test of electrical system fuel metering pump - AD83.70-P-6001-05A

Stationary heater/heater booster test of electrical system fuel metering pump - AD83.70-P-6001-05A

Model 163 as of 01.09.01 with stationary heater 

Model 129 as of 01.06.97 and model 210 as of 01.01.96 with stationary heater 

Model 210 as of 01.09.96 and model 168, 202 with heater booster 

HAND-HELD TESTER Test of Tester/test connection Operation/Requirement Specified value
  • Possible cause/Remedy
1.0 
B 1820
SHORT-CIRCUIT TO GROUND		 Fuel metering pump (Y23) 
Model 129 as of 01.06.97 and model 210 as of 01.01.96 with stationary heater 
Model 210 as of 01.09.96 and model 168, 202 with heater booster 
Model 163 as of 01.09.01 with stationary heater 		 HAND-HELD TESTER
  • Unplug connector at fuel metering pump
  • Ignition: ON 
  • Erase fault memory HHT/STAR DIAGNOSIS
  • Actuate fuel metering pump
  • Read out fault memory
 Fault message HHT/STAR DIAGNOSIS  :
Fuel metering pump Y23
OPEN-CIRCUIT , SHORT-CIRCUIT TO POSITIVE
Fuel metering pump Y23
SHORT-CIRCUIT TO GROUND
  • Fuel metering pump (Y23)
  • Cables and connections
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