ENGINE DIAGNOSIS (RHZ ENGINE WITH TRIPLE-CONNECTOR ECM) 6-1-55
TROUBLESHOOTING
STEP ACTION YES NO
1 Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE”.
2 Check Sensor Power Supply Circuit
1) Connect scan tool to DLC with ignition switch
OFF and then turn ignition switch ON.
2) Dose scan tool indicate DTC as shown below?
<Using Suzuki mode of Suzuki Scan tool>
P1614
<Using Generic Scan tool or Euro mode of Suzuki
Scan tool>
P0560
Go to DTC P1614
(P0560) Diag. Flow
Table.
Go to Step 3.
3 Intake Air Pressure Sensor Signal Check:
1) Remove ECM cover referring to “Voltage Check”
in this section.
2) Check voltage E228-45 and ground with ignition
switch ON.
Is it between 1 and 5 V?
Intermittent trouble or
faulty ECM.
Check for intermittent
referring to
“Intermittent and Poor
Connection” in
Section 0A.
Go to Step 4.
4 Intake Air Pressure Sensor Check:
1) Disconnect connector from intake air pressure
sensor.
2) Check for proper connection to intake air
pressure sensor at each terminal.
3) If OK, check intake air pressure sensor for
performance referring to “Intake Air Pressure
Sensor Inspection” in Section 6E3.
Is check result satisfactory?
“LT GRN”, “BRN” or
“GRN/ORN” circuit
open/short.
If wire and connec-
tions are OK, substi-
tute a known-good
ECM and recheck.
Replace intake air
pressure sensor.
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