Toyota 3VZ–FE Troubleshooting Manual page 421

EG–418
INSPECTION PROCEDURE
1
Check output condition of diag. trouble code 51.
OK
Proceed to next circuit inspection shown on ma-
trix chart (See page EG–344).
Check for open harness and connector between ECM and park/neutral position switch (See
2
page IN–27).
NG
Repair or replace harness or connector.
3
Check park/neutral position switch (See page AX–90).
OK
Check and replace ECM.
ENGINE TROUBLESHOOTING
P
OK
Hint
NG
TYPE I
NG
TYPE II
OK
NG
– CIRCUIT INSPECTION
1. Connect terminals TE2 and E1 of data link connec-
tor 2.
C
2. Turn ignition switch on.
3. Crank the engine.
4. Connect terminals TE1 and E1 of data link connec-
tor 2.
Result
Check if diagnostic trouble code "51" is output when the
shift lever is in the P and D shift positions.
Go to step 
Go to step

Check and replace ECM.
Replace park/neutral position switch.