Dodge R1500 1999 Service Manual page 238

between White PCM harness connector C2 and transmission solenoid
harness connector. If resistance is less than 5 ohms, replace solenoid
and harness assembly. If resistance is 5 ohms or greater, repair open
in TCC solenoid control circuit.
12) Reconnect transmission control relay. Measure resistance
between ground and TCC solenoid control circuit at White PCM harness
connector C2. If resistance is less than 5 ohms, repair TCC solenoid
control circuit for short to ground. If resistance is 5 ohms or
greater, go to next step.
13) Remove transmission control relay. Inspect connector and
terminals for damage. Repair as necessary. If connector and terminals
are okay, measure resistance between transmission control relay output
circuit at relay and TCC solenoid control circuit at White PCM harness
connector C2. If resistance is 26-40 ohms, replace PCM. If resistance
is not 26-40 ohms, go to next step.
14) Measure resistance between TCC solenoid control circuit
and all other circuits at solenoid connector. If resistance is less
than 5 ohms between any 2 circuits, go to next step. If resistance is
not less than 5 ohms between any 2 circuits, go to step 17).
15) Reconnect transmission solenoid harness connector.
Measure resistance of TCC solenoid control circuit between ground and
White PCM harness connector C2. If resistance is less than 5 ohms,
replace solenoid and harness assembly. If resistance is 5 ohms or
greater, go to next step.
16) Repair TCC solenoid control circuit shorted to circuits
measured below 5 ohms. Perform appropriate VERIFICATION TEST VER-2A.
See TEST VER-2A. Reconnect all connectors. Start engine. Using scan
tool, perform TCC SYSTEM TEST. If engine stalls, testing complete. If
engine does not stall, replace PCM.
17) Reconnect transmission solenoid harness connector.
Measure resistance of TCC solenoid control circuit between ground and
White PCM harness connector C2. If resistance is less than 5 ohms,
replace solenoid and harness assembly. If resistance is 5 ohms or
greater, go to next step.
18) Repair or replace solenoid and harness assembly. Perform
appropriate VERIFICATION TEST VER-2A. Reconnect all connectors. Start
engine. Using scan tool, perform TCC SYSTEM TEST. If engine stalls,
testing complete. If engine does not stall, replace PCM.
19) Remove transmission control relay. Inspect connector and
terminals for damage. Repair as necessary. If connector and terminals
are okay, turn ignition on. Measure voltage between ground and B+
circuit at transmission control relay harness connector. If voltage is
10 volts or less, repair open fused B+ circuit. If voltage is greater
than 10 volts, go to next step.
20) Turn ignition off. Measure resistance of transmission
control relay output circuit between transmission control relay
connector and TCC solenoid harness connector. If resistance is greater
than 5 ohms , repair open transmission control relay output circuit.
If resistance is 5 ohms or less, go to next step.
21) Measure resistance between ground and transmission
control relay output circuit. If resistance is less than 5 ohms,
repair short to ground in transmission control relay output circuit.
If resistance is 5 ohms or greater, replace transmission control
relay.
Diagnostic Procedure (AB, BR & WJ Bodies)
NOTE: On WJ body, if all solenoid codes, P0743, P0748 and P0753 are
set, go to test DTC P1765: TRANS 12-VOLT SUPPLY RELAY CNTRL
CIRCUIT before proceeding.
1) Using scan tool, read DTCs. If DTC P1765 is also set, go
to DTC DTC P1765: TRANS 12-VOLT SUPPLY RELAY CNTRL CIRCUIT. If DTC