Toyota T100 1996 Service Manual page 510

DI−246
DTC P1605
CIRCUIT DESCRIPTION
Refer to Knock Sensor 1, 2 Circuit Malfunction on page DI−188.
DTC No.
P1605 Engine control computer malfunction (for knock control)
WIRING DIAGRAM
Refer to page DI−188
INSPECTION PROCEDURE
1 Are there any other codes (besides DTC P1605) being output?
NO
Check and replace ECM (See page IN−26).
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
Knock Control CPU Malfunction
DTC Detecting Condition
for the WIRING DIAGRAM.
− ENGINE (5VZ−FE)
S ECM
YES Go to relevant DTC chart.
Trouble Area
DI9AH−01