Suzuki XL7 2007 Service Manual page 168

1A-63 Engine General Information and Diagnosis:
Circuit/System Testing
1. Ignition ON, observe the DTC information with a
scan tool. Verify that none of the following DTCs are
set. DTC P0010, P0013, P0020, P0023, P0335,
P0336, P0338, P0341, P0342, P0343, P0346,
P0347, P0348, P0366, P0367, P0368, P0391,
P0392, P0393, P2088, P2089, P2090, P2091,
P2092, P2093, P2094, or P2095.
➢ If any of the DTCs listed are set refer to "Diagnostic
Trouble Code (DTC) List - Vehicle Diagnostic
Information: " for further diagnosis.
2. Idle the engine at normal operating temperature for
10 minutes. DTCs P0016, P0017, P0018, or P0019
should not set.
➢ If a DTC sets, inspect for the following:
– The correct installation of the camshaft sensors
– The correct installation of the crankshaft sensor
– A timing chain tensioner condition
– An incorrectly installed timing chain
– Excessive play in the timing chain
DTC P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057, or
P0058
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
• Review "Strategy Based Diagnosis: " for an overview of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle Diagnostic Information: " provides an overview of each diagnostic
category.
DTC Descriptors
DTC P0030: HO2S Heater Control Circuit Bank 1 Sensor 1
DTC P0031: HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 1
DTC P0032: HO2S Heater Control Circuit High Voltage Bank 1 Sensor 1
DTC P0036: Heater Control Circuit Bank 1 Sensor 2
DTC P0037: HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2
DTC P0038: HO2S Heater Control Circuit High Voltage Bank 1 Sensor 2
DTC P0050: HO2S Heater Control Circuit Bank 2 Sensor 1
DTC P0051: HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 1
DTC P0052: HO2S Heater Control Circuit High Voltage Bank 2 Sensor 1
DTC P0056: HO2S Heater Control Circuit Bank 2 Sensor 2
DTC P0057: HO2S Heater Control Circuit Low Voltage Bank 2 Sensor 2
DTC P0058: HO2S Heater Control Circuit High Voltage Bank 2 Sensor 2
Diagnostic Fault Information
Circuit
Ignition Voltage
HO2S Heater Control Sensor 1
HO2S Heater Control Sensor 2
– A timing chain that jumped teeth
– A crankshaft reluctor wheel that has moved in
relationship to top dead center (TDC) on the
crankshaft
3. If the vehicle passes the Circuit/System Verification
test, then operate the vehicle within the conditions
for running the DTC. You may also operate the
vehicle within the conditions that are captured in the
Freeze Frame/Failure Records Data List.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "Camshaft Timing Drive Chain Alignment Diagram
(Third Design): " "Camshaft Timing Drive Chain
Alignment Diagram (Fourth Design): "
• "Camshaft Timing Drive Components Cleaning and
Inspection (Third Design): " "Camshaft Timing Drive
Components Cleaning and Inspection (Fourth
Design): "
• "Crankshaft and Bearings Cleaning and Inspection: "
Short to Open/High
Ground Resistance
P0030, P0036, P0030, P0036,
P0050, P0056 P0050, P0056
P0030, P0050,
P0031, P0051
P0134, P0154
P0036, P0056,
P0037, P0057
P0140, P0160
Signal
Short to Voltage
Performance
P0135, P0141,
—
P0155, P0161
P0135, P0141,
P0032, P0052
P0155, P0161
P0135, P0141,
P0038, P0058
P0155, P0161