Dtc P0105: Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction; Dtc P0110: Intake Air Temperature Sensor 1 Circuit Malfunction - Suzuki GRAND VITARA 2005 Service Manual

1A-34 Engine General Information and Diagnosis:

DTC P0105: Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction

NOTE
• Conditions for applying the fault finding procedure to stored faults:
The fault is declared present:
– When an attempt is made to start the engine
– With the engine running
• The barometric pressure sensor is built into the ECM, and cannot be separated.
If the fault is present:
– There is light smoke at the exhaust.
– The atmospheric pressure value changes to safe mode, "Barometric Pres" on Data List of SUZUKI
scan tool = 1000 hPa.
– The Injection warning light (gravity 1 warning light) is lit.
• Use service wire for all operations on the controller connectors.
Detecting Condition
Displaying on SUZUKI scan tool
1.DEF
2.DEF
3.DEF
Troubleshooting
Disconnect the ECM and check the condition of its contacts and connector.
Repair if necessary.
Display the value of parameter "Turbo Pressure" on Data List of SUZUKI scan tool.
If this value is stuck at 1000 hPa, refer to interpretation of fault "DTC P0235: Turbo / Super Charger Boost
Sensor "A" Circuit Malfunction: ".
If the fault is still present, substitute a known-good ECM and recheck.

DTC P0110: Intake Air Temperature Sensor 1 Circuit Malfunction

NOTE
• Conditions for applying fault finding procedures to stored faults:
The fault is declared present after an attempted start, or with the engine running.
• If the fault is present:
– The air temperature value changes to safe mode, "Intake Air Temp" on Data List of SUZUKI scan
tool = 45.1 °C, 113.2 °F.
– The EGR function is inhibited.
• Use service wire for all operations on the ECM connectors.
Wiring Diagram
For wiring circuit and connector number, refer to "A-5 Engine and A/C Control System Circuit Diagram (DSL): in
Section 9A".
Detecting Condition
Displaying on SUZUKI scan tool
CC.0
CO.1
Detecting condition
Signal outside upper limit
Signal outside lower limit
Inconsistent signal
Detecting condition
Short circuit to vehicle body ground
Open circuit or short circuit to +12 V
S5JB0B1104093
S5JB0B1104094