Toyota T100 1996 Service Manual page 453

INSPECTION PROCEDURE
HINT:
DTC P0325 is for the right bank knock sensor circuit. DTC P0330 is for the left bank knock sensor circuit.
1 Connect OBD II scan tool or TOYOTA hand−held tester and check knock sensor
circuit.
EC1
Knock Sensor
1 1
1
1
2 2
Female
Connector
EC1
P20457
A00053
A00054
Type I
2 Check for open and short in harness and connector between EC1 connector and
ECM (See page IN−26).
OK
Check and replace ECM (See page IN−26).
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
ECM
6 17
KNK1
E6 E6
3 16
KNK2
E6 E6
(M/T)(A/T)
Male
Connector
A00112
− ENGINE (5VZ−FE)
PREPARATION:
(a) Connect the OBD II scan tool or TOYOTA hand−held tes-
ter to the DLC3.
(b) Disconnect the wire to wire connector EC1.
(c) Connect the terminals of the disconnected EC1 male con-
nector and EC1 female as follows.
Male connector ↔ Female connector
(d) Turn the ignition switch ON and push the OBDII scan tool
or TOYOTA hand−held tester main switch ON.
(e) After the engine is warmed up, perform quick racing to
4,000 rpm 3 times.
CHECK:
Check the DTC.
RESULT:
Type I
Type II
Type II Go to step 3.
NG Repair or replace harness or connector.
Terminal 1 ↔ Terminal 2
Terminal 2 ↔ Terminal 1
DTC same as when vehicle brought in
P0325 → P0325 or P0330 → P0330
DTC different to when vehicle brought in
P0325 → P0330 or P0330 → P0325
DI−189