2006 DODGE RAM SRT-10 Service Repair Manual

Page 753 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual 5.ECM
Turn the ignition off.
Disconnect the Fan harness connector.
Turn the ignition on.
Measure the voltage between the sensor (K668) #2 5-volt supply (fan
speed sensor power) circuit at the fan clut

Page 754 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual P0643-HIGH VOLTAGE AT THE #2 SENSOR SUPPLY CIRCUIT
For a complete wiring diagramRefer to Section 8W.

Page 755 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual When Monitored:
With the key on.
Set Condition:
Voltage detected on the #2 sensor supply circuit was above a calibrated value.
Possible Causes
FAN CLUTCH ASSEMBLY
(K668) 5-VOLT SHORTED TO VOLTAGE
INTE

Page 756 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual 3.ECM
Turn the ignition off.
Reconnect the ECM harness connectors.
Turn the ignition on.
Measure the voltage between the (K668) 5-volt supply circuit in the sen-
sor harness connector and battery nega

Page 757 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual P0646-LOW VOLTAGE DETECTED AT THE A/C CLUTCH RELAY
For a complete wiring diagramRefer to Section 8W.

Page 758 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual When Monitored:
When the ignition is on.
Set Condition:
When the signal from the A/C Clutch circuit output does not match the signalfrom the A/C Clutch feedback
Possible Causes
LOW VOLTAGE SUPPLY TO T

Page 759 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual 4.FUSED BATTERY SUPPLY
Connect the ECM and TIPM connectors.
Ignition on, engine not running.
Using a back probing tool 6801, back probe the A/C clutch logic pin in the TIPM logic connector.
Usinga12vo

Page 760 of 5267

DODGE RAM SRT-10 2006  Service Repair Manual P0647-HIGH VOLTAGE DETECTED AT THE A/C CLUTCH RELAY
For a complete wiring diagramRefer to Section 8W.