Dodge Dakota (R1). Manual — part 890
Symptom:
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS
When Monitored and Set Condition:
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS
When Monitored:
Continuously with the key on.
Set Condition:
This code will set if the voltage detected on the 3-4 Shift Solenoid Control
circuit at the PCM is different than the expected voltage.
POSSIBLE CAUSES
P1765 DTC PRESENT
INTERMITTENT - 3-4 SHIFT SOLENOID CONTROL CIRCUIT
TRANSMISSION RELAY CONTROL OUTPUT
3-4 SHIFT SOLENOID CONTROL CIRCUIT OPEN
3-4 SHIFT SOLENOID CONTROL CIRCUIT OPEN INTERNAL
FUSED B+ CIRCUIT OPEN
TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORT TO GROUND
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORT TO GROUND INTERNAL
TRANSMISSION RELAY OUTPUT CIRCUIT SHORT TO GROUND
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORT TO SOLENOID CIRCUITS INTERNAL
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORTED TO OTHER CIRCUITS
3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORT TO OTHER CIRCUITS INTERNAL
TRANSMISSION CONTROL RELAY - POOR CONTACTS
PCM - 3-4 SHIFT SOLENOID CONTROL CIRCUIT
TEST
ACTION
APPLICABILITY
1
Ignition on, engine not running.
With the DRBIII
t, read DTCs.
Is the Good Trip Counter for P0753 displayed and equal to 0?
All
Yes
→
No
→
2
With the DRBIII
t, read Transmission DTCs.
Is the DTC P1765 present?
All
Yes
→
Perform diagnostics on P1765 TRANS 12 VOLT SUPPLY RELAY
CTRL CIRCUIT first before proceeding.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
292
TRANSMISSION
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t, read Transmission DTCs.
Are DTCs, P0743, P0748 and P0753 present?
All
Yes
→
No
→
4
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused Transmission Control
Relay Output circuit in the Transmission Solenoid Assembly harness connector.
Does the test light illuminate brightly?
All
Yes
→
Replace the Transmission Solenoid Assembly in accordance with
the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
5
Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused B+ circuit in the
Transmission Control Relay connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
when connected directly to the battery.
Does the light illuminate brightly?
All
Yes
→
No
→
Repair the Fused B+ circuit for an open. If the fuse is open make
sure to check for a short to ground or excessive resistance in the
Fused B+ circuit and repair as necessary.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
6
Turn ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Remove the Transmission Control Relay.
Measure the resistance between ground and the Fused Transmission Relay Control
Output circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the Fused Transmission Control Relay Output circuit for a
short to ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
293
TRANSMISSION
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Check connectors - Clean/repair as necessary
Ignition on, engine not running.
Connect a jumper wire between the Fused Transmission Relay Output circuit and the
Fused B+ in the Transmission Relay connector.
Using a 12-volt test light connected to ground, check the Fused Transmission Relay
Control Output circuit in the Transmission Solenoid Assembly harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
when connected directly to the battery.
Does the test light illuminate brightly?
All
Yes
→
No
→
Repair the Fused Transmission Control Relay Output circuit for
an open. If the Fuse is open, make sure to check for a short to
ground or excessive resistance in the Fused Transmission Control
Relay Output circuit and repair as necessary.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
8
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Check connectors - Clean/repair as necessary
Ignition on, engine not running.
Connect a jumper wire between the Fused Transmission Relay Output circuit and
Fused B+ in the Transmission Relay connector.
Using a 12-volt test light connected to ground, check the Fused Transmission Relay
Control Output circuit in the Transmission Solenoid Assembly harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
when connected directly to the battery.
Does the test light illuminate brightly?
All
Yes
→
Replace the Transmission Control Relay.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Test Complete.
9
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connectors.
Disconnect the PCM harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the 3-4 Shift Solenoid Control circuit between the
Transmission Solenoid Assembly harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the 3-4 Shift Solenoid Control circuit for an open.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
294
TRANSMISSION
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS —
Continued
TEST
ACTION
APPLICABILITY
10
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between ground and the 3-4 Shift Solenoid Control circuit in
the PCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the 3-4 Shift Solenoid Control circuit for a short to ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
11
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Disconnect the Transmission Solenoid Assembly harness connector.
Ignition on, engine not running.
Measure the voltage of the 3-4 Shift Solenoid Control circuit.
Is the voltage above 0.5 volt?
All
Yes
→
Repair the 3-4 Shift Solenoid Control circuit for a short to voltage.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
12
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Disconnect the Transmission Solenoid Assembly harness connector.
Remove the Transmission Control Relay.
Check connectors - Clean/repair as necessary
Measure the resistance between the 3-4 Shift Solenoid Control circuit and all other
circuits in the Transmission Solenoid Assembly harness connector.
Is the resistance between the 3-4 Shift Solenoid Control circuit and any other circuit
below 100 koh
All
Yes
→
Repair as necessary.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
13
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Remove the Transmission Control Relay.
Measure the resistance of the 3-4 Shift Solenoid Control circuit between the PCM
harness connector and the Fused Transmission Control Relay Output circuit connec-
tor.
Is the resistance between 25.0 ohms and 60.0 ohms
All
Yes
→
No
→
Replace the Transmission Solenoid Assembly in accordance with
the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
295
TRANSMISSION
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS —
Continued
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