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XJ
DESCRIPTION AND OPERATION (Continued)
(1) Connect the DRB scan tool to data link (diag-
nostic) connector.
(2) Turn the ignition switch on, access Read Fault
Screen. Record all the DTC's shown on the DRB scan
tool.
DIAGNOSTIC TROUBLE CODE DESCRIPTIONS
Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was
(M)
recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon on
Generic Scan
Tool P-Code
P0030 (M)
1/1 O2 Sensor Heater Relay Circuit
P0036 (M)
1/2 O2 Sensor Heater Relay Circuit
P0106
Barometric Pressure Out of Range
P0107 (M)
Map Sensor Voltage Too Low
P0108 (M)
Map Sensor Voltage Too High
P0112 (M)
Intake Air Temp Sensor Voltage Low
P0113 (M)
Intake Air Temp Sensor Voltage High
P0116
P0117 (M)
ECT Sensor Voltage Too Low
P0118 (M)
ECT Sensor Voltage Too High
P0121 (M)
TPS Voltage Does Not Agree With
P0121 (M)
Accelerator Position Sensor (APPS)
P0122 (M)
Throttle Position Sensor Voltage Low
P0122 (M)
Accelerator Position Sensor (APPS)
P0123 (M)
Throttle Position Sensor Voltage
P0123 (M)
Accelerator Position Sensor (APPS)
P0125 (M)
Closed Loop Temp Not Reached
P0125 (M)
P0130 (M)
1/1 O2 Sensor Heater Circuit
Generator lamp illuminated
(G)
DRB Scan Tool Display
MAP
Signal Voltage Too Low
Signal Voltage Too Low
High
Signal Voltage Too High
Engine is Cold Too Long
Malfunction
(3) To erase DTC's, use the Erase Trouble Code
data screen on the DRB scan tool.
NOTE: For a list of DTC's, refer to the following
charts.
instrument panel.
Problem detected in oxygen sensor heater relay circuit.
Problem detected in oxygen sensor heater relay circuit.
MAP sensor input voltage out of an acceptable range
detected during reading of barometric pressure at key-on.
MAP sensor input below minimum acceptable voltage.
MAP sensor input above maximum acceptable voltage.
Intake air (charge) temperature sensor input below the
Intake air (charge) temperature sensor input above the
A rationatilty error has been detected in the coolant temp
Engine coolant temperature sensor input below the
Engine coolant temperature sensor input above the
TPS signal does not correlate to MAP sensor signal.
APPS voltage input below the minimum acceptable
Throttle position sensor input below the acceptable
APPS voltage input below the minimum acceptable
Throttle position sensor input above the maximum
APPS voltage input above the maximum acceptable
Time to enter Closed Loop Operation (Fuel Control) is
Engine does not reach operating temperature.
Oxygen sensor heater element malfunction.
EMISSION CONTROL SYSTEMS
Brief Description of DTC
minimum acceptable voltage.
maximum acceptable voltage.
sensor.
minimum acceptable voltage.
maximum acceptable voltage.
voltage.
voltage range.
voltage.
acceptable voltage.
voltage.
excessive.
25 - 3
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Troubleshooting
