Isuzu 2000 Trooper Workshop Manual page 1616

7A1–32 TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0706 Transmission Range Switch (Mode Switch) Performance
Step
1 Were you sent here from the "Powertrain On–Board Diagnostic
(OBD) System Check"?
2 Perform the following checks:
 The transmission linkage from the select lever to the manual
valve is adjusted properly.
 Diagnostic circuit check.
Were the checks performed?
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: D1, D2, D3, D4, N, R, and P.
Does each selected transmission range match the scan tool
"Range Switch" display?
4 Are all range switch pin displays incorrect?
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?
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?
7 Check the affected wiring and connector, and repair.
Is the repair complete?
8 Check the Powertrain Control Module (PCM) connectors for poor
connection.
If no problem was found, replace the PCM.
Is the replacement complete?
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?
Action Yes
Go to OBD
System Check
Driveability and
Emissions in
Go to Step 2 Engine section
Go to Step 3
Go to Diagnostic
Aids Go to Step 4
Go to Step 5 Go to Step 6
Go to Step 9
Go to Step 7 Go to Step 8
Go to Step 9
Go to Step 9
Begin diagnosis
again
Repair verified
Go to Step 1
Exit DTC table
No
Refer to
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