Dodge ZB 2005 Service Manual page 1252

Symptom:
P0622-GENERATOR FIELD NOT SWITCHING PROPERLY
When Monitored and Set Condition:
P0622-GENERATOR FIELD NOT SWITCHING PROPERLY
When Monitored: With the ignition key on and the engine running.
Set Condition: When the PCM tries to regulate the generator field with no result during
monitoring.
GENERATOR FIELD PERFORMANCE
(K125) GEN FIELD SOURCE CIRCUIT OPEN
(K20) GEN FIELD CONTROL CIRCUIT OPEN
(K20) GEN FIELD CONTROL CIRCUIT SHORTED TO GROUND
GENERATOR
PCM
TEST
1 Ignition on, engine not running.
Record all DTCs and the related Freeze Frame data.
Using a 12-volt test light connected to ground, backprobe the (K20) Gen Field Control
circuit at the back of the Generator.
With the DRBIII , actuate the Generator Field Driver.
Does the test light blink?
Yes → Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
→ Go To 2
No
2 Ignition on, engine not running.
Carefully inspect all connectors for corrosion or spread terminals before continuing.
Backprobe the (K125) Generator Field Source circuit at back of Generator with a volt
meter.
With the DRBIII actuate the Generator Field Driver.
Is the voltage above 10.0 volts?
Yes → Go To 3
→ Repair the open in the (K125) Gen Field Source circuit.
No
POSSIBLE CAUSES
ACTION
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 3.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
DRIVEABILITY - GAS
131
APPLICABILITY
All
All