Workshop Manual

7A1–32
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
Step Action Yes No
1 Were you sent here from the “Powertrain On–Board Diagnostic
(OBD) System Check”?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emissions in
Engine section
2 Perform the following checks:
B The transmission linkage from the select lever to the manual
valve is adjusted properly.
B Diagnostic circuit check.
Were the checks performed?
Go to Step 3 —
3 1. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”.
NOTE: Before clearing DTC(s), use the scan tool to record “Freeze
Frame” and “Failure Records” for reference, as data will be lost
when the “Clear Info” function is used.
3. Record the DTC “Freeze Frame” and “Failure Records”.
4. Select each transmission range: DL, D2, D3, D4, N, R, and P.
Does each selected transmission range match the scan tool
“Range Switch” display?
Go to Diagnostic
Aids
Go to Step 4
4 Are all range switch pin displays incorrect? Go to Step 5 Go to Step 6
5 Check fuse and wiring to the 8–way connector terminal 5(D) for
opens.
Refer to Mode Switch in Automatic Transmission (4L30–E)
section.
If no problem was found, replace the range switch.
Is the replacement complete? Go to Step 9 —
6 1. Disconnect the 8–way range switch connector.
2. Using ohmmeter, check continuity between terminal 5(D) and
respectively terminals 3(G), 6(C), 7(B) and 8(A) of the 8–way
range switch connector.
3. Move shift selector lever through all positions and compare
results with “Range Switch Logic Table”.
Is one range switch pin display incorrect?
Go to Step 7 Go to Step 8
7 Check the affected wiring and connector, and repair.
Is the repair complete?
Go to Step 9 —
8 Check the Powertrain Control Module (PCM) connectors for poor
connection.
If no problem was found, replace the PCM.
Is the replacement complete?
Go to Step 9 —
9 1. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and road test the vehicle.
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