Workshop Manual

7A1–66
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0753 Shift Solenoid A Electrical (Cont’d)
Step NoYesAction
8 1. Disconnect the transmission main case 7–way connector
E–42.
2. Using the J39200 DVOM, measure the resistance between
terminals E42–2(D) and E42–3(C).
Is the resistance within 18–20 ohms?
Go to Step 13 Go to Step 14
9 Check every connection at the PCM connector.
Was a problem found?
Go to Step 16 Go to Step 15
10 The wiring harness between PCM connector terminals E34–5
and transmission harness terminal E42–3(C) is shorted to
voltage.
Was a problem found and corrected?
Go to Step 17 —
11 The wiring harness between PCM connector terminal
E34–5 and transmission harness terminal E42–3(C) is shorted to
ground.
Was a problem found and corrected?
Go to Step 17 —
12 The wiring harness between PCM connector terminals E35–43
and transmission harness terminal E42–2(D) is shorted to
ground.
Was a problem found and corrected?
Go to Step 17 —
13 The wiring harness between PCM connector E-34 or E-35 and
transmission 7–way connector E42 is open or poor connection.
Was a problem found and corrected?
Go to Step 17 —
14 The shift solenoid A is faulty.
Replace the shift solenoid A. Refer to Solenoid (Main Case Valve
Body) in Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 17 —
15 The PCM may be faulty.
Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 17 —
16 Repair the PCM connector connection.
Was a problem found and corrected?
Go to Step 17 —
17 1. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and operate the vehicle under the
following conditions:
B The shift solenoid A is commanded “on” and the voltage
drops to zero.
B The shift solenoid A is commanded “off” and the voltage
increases to B+.
2. Review the scan tool “DTC Info”.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to
Step 1
Repair verified
Exit DTC table