Dodge R1500 1999 Service Manual page 243

Inspect connectors and terminals for damage. Repair as necessary. If
connectors and terminals are okay, turn ignition on. Measure voltage
between ground and governor pressure solenoid control circuit at
transmission solenoid harness connector. If voltage is greater than 10
volts, go to next step. If voltage is 10 volts or less, go to step 7).
6) Repair governor pressure solenoid control circuit for
short to voltage. Reconnect all disconnected harness connectors. Using
scan tool, perform GOV and 3-4 SHIFT VALVE SYSTEM TEST. Select 1st
gear and read governor pressure voltage. If voltage is one volt or
greater, replace PCM. If voltage is less than one volt, test is
complete.
7) Turn ignition off. Reconnect transmission solenoid harness
connector. Measure resistance between ground and governor pressure
solenoid control circuit at White PCM harness connector C2. If
resistance is 5 ohms or less, repair short to ground in governor
pressure solenoid control circuit. If resistance is greater than 5
ohms, go to next step.
8) Remove transmission control relay. Inspect transmission
control relay connector and terminals for damage. Repair as necessary.
If connector and terminals are okay, measure resistance between
transmission control relay output circuit at transmission control
relay connector and governor pressure solenoid control circuit at
White PCM harness connector C2. If resistance is 2.5-5.0 ohms, replace
PCM. If resistance is not 2.5-5.0 ohms, go to next step.
9) Measure resistance between transmission control relay
output circuit at transmission control relay connector and governor
pressure solenoid control circuit at White PCM harness connector C2.
If resistance is greater than 5 ohms, go to next step. If resistance
is 5 ohms or less, go to step 12).
10) Drain transmission fluid and remove oil pan. Disconnect
governor pressure solenoid harness connector. Inspect connector and
terminals for damage. Repair as necessary. If connector and terminals
are okay, measure resistance across governor pressure solenoid
terminals. If resistance is 5 ohms or less, repair or replace
transmission solenoid and harness assembly. If resistance is greater
than 5 ohms, go to next step.
11) Measure resistance of governor pressure solenoid control
circuit between White PCM harness connector C2 and transmission
solenoid harness connector. If resistance is greater than 5 ohms,
repair open governor pressure solenoid control circuit. If resistance
is 5 ohms or less, replace governor pressure solenoid.
12) Measure resistance between governor pressure solenoid
control circuit and all other circuits at transmission solenoid
harness connector. If resistance is less than 2.5 ohms between any 2
circuits, go to next step. If resistance is not less than 2.5 ohms
between any 2 circuits, go to step 14).
13) Repair governor pressure solenoid control circuits that
were shorted together. Reconnect all disconnected harness connectors.
Using scan tool, perform GOV and 3-4 SHIFT VALVE SYSTEM TEST. Select
1st gear and read governor pressure voltage. If voltage is one volt or
greater, replace PCM. If voltage is less than one volt, test is
complete.
14) Drain transmission fluid and remove oil pan. Disconnect
governor pressure solenoid harness connector. Inspect connector and
terminals for damage. Repair as necessary. If connector and terminals
are okay, measure resistance across governor pressure solenoid
terminals. If resistance is 2.5 ohms or less, go to next step. If
resistance is greater than 2.5 ohms, go to step 16).
15) Replace governor pressure solenoid. Replace oil pan and
fill with fluid. Reconnect all disconnected harness connectors. Using
scan tool, perform GOV and 3-4 SHIFT VALVE SYSTEM TEST. Select 1st
gear and read governor pressure voltage. If voltage is one volt or
greater, replace PCM. If voltage is less than one volt, test is