MPI <4G9> -
Troubleshooting
13A-166
INSPECTION PROCEDURE USING AN
ANALYZER
On A/T models, the engine-A/T-ECU (combination ECU) has
been introduced. Due to this, only the inspection procedures
at the engine-A/T-ECU terminals are described below (On
M/T models, the inspection procedures at the engine-ECU
terminals are not changed).
AIR FLOW SENSOR
Alternate method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 65.
CAMSHAFT POSITION SENSOR AND CRANK ANGLE
SENSOR
Alternate method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 56. (When checking the
camshaft position sensor signal wave pattern.)
2. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 45. (When checking the crank
angle sensor signal wave pattern.)
INJECTOR
Alternate method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 1. (When checking the No. 1
cylinder.)
2. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 9. (When checking the No. 2
cylinder.)
3. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 24. (When checking the No.
3 cylinder.)
4. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 2. (When checking the No. 4
cylinder.)
IDLE SPEED CONTROL SERVO (STEPPER MOTOR)
Alternate method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 14, connection terminal 28,
connection terminal 15, and connection terminal 29
respectively.
IGNITION COIL AND POWER TRANSISTOR
Alternate method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 11 (No. 1 - No. 4), terminal
12 (No. 2 - No. 3) respectively