TEST
ACTION
APPLICABILITY
2
Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Ignition on, engine not running.
Measure the voltage of the Fused B+ circuit in the TCM harness connector.
Is the voltage below 10.0 volts?
All
Yes
→ Go To 3
No
→ Go To 5
3
Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused B+ circuit in the TCM
harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
All
Yes
→ Go To 4
No
→ Repair the Fused B+ circuit for an open or high resistance. If the
fuse is open make sure to check for a short to ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
4
Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Using a 12-volt test light connected to 12-volts, check all the ground circuits in the
TCM harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the light illuminate brightly at all the ground circuits?
All
Yes
→ Test Complete.
No
→ Repair the Ground circuit(s) as necessary.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
5
Has the battery been disconnected, lost it’s charge, or been replaced recently?
All
Yes
→ This is the cause of the DTC. Erase the DTC and return the
vehicle to the customer.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Has the Quick Learn procedure been performed?
All
Yes
→ This is the cause of the DTC. Erase the DTC and return the
vehicle to the customer.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Has the TCM been replaced or disconnected?
All
Yes
→ Replacing or disconnecting the TCM will set this DTC. Erase the
DTC and return the vehicle to the customer.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 8
125
TRANSMISSION - EATX
P1684-BATTERY WAS DISCONNECTED —
Continued