Suzuki Liana RH413, Service Manual

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1A-47 Engine General Information and Diagnosis:
DTC Detecting Condition and Possible Cause
NOTE
• When this DTC and DTC P0120 (No. 13) are indicated together, it is possible that “GRY/RED” circuit
is open.
• When DTC P0105 (No. 11), P0110 (No. 18), P0115 (No. 19) and P0120 (No. 13) are indicated together, it
is possible that “ORN” circuit is open.
DTC Confirmation Procedure
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode on scan tool and check DTC.
DTC Troubleshooting
DTC detecting condition Possible cause
• MAP sensor signal is 0.19 V or lower
(Low pressure – High vacuums – Low voltage)
or
• MAP sensor signal is 4.5 V or higher
(High pressure – Low vacuums – High voltage)
• “ORN” circuit open
• “GRY/RED” circuit open or shorted to ground
• “LT GRN/RED” circuit open or shorted to ground
• MAP sensor malfunction
• ECM malfunction
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Check MAP sensor and its circuit
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON.
3) Check intake manifold pressure.
Is it 114 kPa or more or 43 kPa or less?
Go to Step 3. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
3 Check wire harness
1) Disconnect connector from MAP sensor with ignition
switch tuned OFF.
2) Check for proper connection of MAP sensor at “GRY/
RED” and “LT GRN/RED” wire terminals.
3) If OK, then with ignition switch ON, check voltage
between each of “GRY/RED” or “LT GRN/RED” wire
terminals and body ground.
Is voltage about 4 – 6 V at each terminal?
Go to Step 4. “GRY/RED” wire open
or shorted to ground
circuit or shorted to
power circuit (See
NOTE), “LT GRN/RED”
wire open or shorted to
ground, poor “C41-26”
connection or “C41-22”
connection. If wire and
connection are OK,
confirm that MAP
sensor is normal and
then substitute a known-
good ECM and recheck.
I2RH0B110023-01