Workshop Manual

7A1–74
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0758 Shift Solenoid B Electrical (Cont’d)
Step NoYesAction
11 Check every connection of the PCM.
Was a problem found and corrected?
Go to Step 22 Go to Step 12
12 1. Connect the E-34 (BLUE) and E-35 (RED) PCM connectors to
the PCM.
2. Turn the ignition “on”, the engine “on”.
3. Repeat Step 3.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 21
Go to Diagnostic
Aids
13 The wiring harness between PCM connector terminal
E35–31 and transmission main case terminal E42–6(A) is shorted
to voltage.
Was a problem found and corrected?
Go to Step 22 —
14 The PCM internal terminal E35–31 is shorted to voltage.
Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 22 —
15 The wiring harness between PCM connector and transmission
main case 7-way connector is shorted.
Was a problem found and corrected?
Go to Step 22 —
16 The shift solenoid B is faulty, or the internal wiring harness from
the shift solenoid B is shorted.
Was a problem found and corrected?
Go to Step 22 —
17 The wiring harness between PCM connector terminal
E35–31 and transmission main case connector terminal
E42–6(A) is shorted to ground.
Was a problem found and corrected?
Go to Step 22 —
18 The wiring harness between PCM connector terminal E35–43
and transmission main case connector terminal E42–2(D) is
shorted to ground.
Was a problem found and corrected?
Go to Step 22 —
19 The wiring harness between PCM connector terminal E35–31
and transmission main case connector terminal E42–6(A), or
between PCM connector terminal E35–43 and main case
connector terminal E42–2(D) is open.
Was a problem found and corrected?
Go to Step 22 —
20 The internal wiring harness from the shift solenoid B is open, or
the shift solenoid B is faulty.
Was a problem found and corrected?
Go to Step 22 —
21 Replace the PCM.
Is the replacement complete?
Go to Step 22 —
22 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 B is commanded “on” and voltage drops to
zero.
B The shift solenoid B is commanded “off” and 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