- Open or short in Air Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1) circuit
- Air Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1)
- Air Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1) heater
- A/F relay
- A/F sensor heater and relay circuits
- Air induction system
- Fuel pressure
- Fuel injector
- ECM
| Last Modified: 4-30-2014 | 6.6 C | Doc ID: RM000000WC400JX |
| Model Year: 2006 | Model: LX470 | Prod Date Range: [05/2005 - ] |
| Title: 2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2195-P2198; Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1); 2006 MY LX470 [05/2005 - ] | ||
|
DTC |
P2195 |
Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) |
|
DTC |
P2196 |
Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) |
|
DTC |
P2197 |
Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1) |
|
DTC |
P2198 |
Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1) |
DESCRIPTION
HINT:
- Although the DTC titles refer to the "oxygen sensor", these DTCs relate to the Air Fuel Ratio (A/F) sensor.
- Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located near the engine assembly.
The A/F sensor generates voltage* that corresponds to the actual air fuel ratio. This sensor voltage is used to provide the ECM with feedback so that it can control the air fuel ratio. The ECM determines the deviation from the stoichiometric air fuel ratio level, and regulates the fuel injection time. If the A/F sensor malfunctions, the ECM is unable to control the air fuel ratio accurately.
The A/F sensor is the planar type and is integrated with the heater, which heats the solid electrolyte (zirconia element). This heater is controlled by the ECM. When the intake air volume is low (the exhaust gas temperature is low), a current flows into the heater to heat the sensor, in order to facilitate accurate oxygen concentration detection. In addition, the sensor and heater portions are narrower than the conventional type. The heat generated by the heater is conducted to the solid electrolyte through the alumina, and the sensor activation is accelerated.
In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) components in the exhaust gas, a TWC is used. For the most efficient use of the TWC, the air fuel ratio must be precisely controlled so that it is always close to the stoichiometric level.
HINT:
*: Value changes inside the ECM. Since the A/F sensor is the current output element, the current is converted to a voltage inside the ECM. Any measurements taken at the A/F sensor or ECM connectors will show a constant voltage.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P2195 P2197 |
Conditions (a) and (b) continue for 2 seconds or more (2 trip detection logic): (a) Air Fuel Ratio (A/F) sensor voltage more than 3.8 V (b) Heated Oxygen (HO2) sensor voltage 0.15 V or more |
|
|
P2195 P2197 |
While fuel-cut operation performed (during vehicle deceleration), air fuel ratio (A/F) sensor current 3.6 mA or more for 3 seconds (2 trip detection logic) |
|
|
P2196 P2198 |
Conditions (a) and (b) continue for 2 seconds or more (2 trip detection logic): (a) A/F sensor voltage less than 2.8 V (b) HO2 sensor voltage less than 0.85 V |
|
|
P2196 P2198 |
While fuel-cut operation performed (during vehicle deceleration), air fuel ratio (A/F) sensor current 1.4 mA for 3 seconds (2 trip detection logic) |
|
HINT:
- DTCs P2195 and P2196 indicate malfunctions related to bank 1 A/F sensor circuit.
- DTCs P2197 and P2198 indicate malfunctions related to bank 2 A/F sensor circuit.
- Bank 1 refers to the bank that includes No. 1 cylinder.
- Bank 2 refers to the bank that includes No. 2 cylinder.
- When any of these DTCs are set, check the A/F sensor output voltage by entering the following menus on the intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / AFS B1S1.
- Short-term fuel trim values can also be read using the intelligent tester.
- The ECM regulates the voltages at the A1A+, A2A+, A1A- and A2A- terminals of the ECM to a constant level. Therefore, the A/F sensor output voltage cannot be confirmed without using the intelligent tester.
- If an A/F sensor malfunction is detected, the ECM sets a DTC.
MONITOR DESCRIPTION
-
Sensor voltage detection monitor
Under the air fuel ratio feedback control, if the A/F sensor output voltage indicates rich or lean for a certain period of time, the ECM determines that is a malfunction in the A/F sensor. The ECM illuminates the MIL and sets a DTC.
Example:
If the A/F sensor voltage output is less than 2.8 V (very rich condition) for 10 seconds, despite the HO2 sensor output voltage being less than 0.6 V, the ECM sets DTC P2196. Alternatively, if the A/F sensor output voltage is more than 3.8 V (very lean condition) for 15 seconds, despite the HO2 sensor output voltage being 0.15 V or more, DTC P2195 is set.
-
Sensor current detection monitor
A rich air fuel mixture causes a low A/F sensor current, and a lean air fuel mixture causes a high A/F sensor current. Therefore, the sensor output becomes low during acceleration, and it becomes high during deceleration with the throttle valve fully closed. The ECM monitors the A/F sensor current during fuel-cut and detects any abnormal current values.
If the A/F sensor output is 3.6 mA or more for more than 3 seconds of cumulative time, the ECM interprets this as a malfunction in the A/F sensor and sets DTC P2195 (high-side stuck). If the A/F sensor output is 1.0 mA or less for more than 3 seconds of cumulative time, the ECM sets DTC P2196 (low-side stuck).
MONITOR STRATEGY
|
Related DTCs |
P2195: A/F sensor (Bank 1) signal stuck lean P2196: A/F sensor (Bank 1) signal stuck rich P2197: A/F sensor (Bank 2) signal stuck lean P2198: A/F sensor (Bank 2) signal stuck rich |
|
Required Sensors/Components (Main) |
A/F sensor |
|
Required Sensors/Components (Related) |
HO2 sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
15 seconds: A/F sensor signal stuck lean/rich 3 seconds: A/F sensor current (high/low side) |
|
MIL Operation |
2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
The monitor will run whenever these DTCs are not present |
P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1) P0037, P0038, P0057, P0058 (O2 sensor heater - Sensor 2) P0100 - P0103 (MAF meter) P0110 - P0113 (IAT sensor) P0115 - P0118 (ECT sensor) P0120 - P0223, P2135 (TP sensor) P0125 (Insufficient ECT for closed loop) P0136, P0156 (O2 Sensor - Sensor 2) P0171, P0172 (Fuel system) P0300 - P0308 (Misfire) P0335 (CKP sensor) P0340, P0341 (CMP sensor) P0500 (VSS) P2440 (A/R control valve stuck open) P2441 (A/R control valve stuck close) P2444 (AIP stuck ON) P2445 (AIP stuck OFF) |
Sensor voltage detection monitor (Lean side malfunction P2195, P2197):
|
Time while all of following conditions met |
2 seconds or more |
|
Rear HO2 sensor voltage |
0.15 V or more |
|
Time after engine start |
30 seconds or more |
|
A/F sensor status |
Activated |
|
Fuel system status |
closed-loop |
|
Engine |
Running |
Sensor voltage detection monitor (Rich side malfunction P2196, P2198):
|
Time while all of following conditions met |
2 seconds or more |
|
Rear HO2 sensor voltage |
Below 0.6 V |
|
Time after engine start |
30 seconds or more |
|
A/F sensor status |
Activated |
|
Fuel system status |
closed-loop |
|
Engine |
Running |
Sensor current detection monitor P2195, P2196, P2197 and P2198
|
Battery voltage |
11 V or more |
|
Atmospheric pressure |
570 mmHg or higher |
|
Air-fuel ratio sensor status |
Activated |
|
Pass/Malfunction determination in this driving cycle |
Not determined |
|
ECT |
75°C (167°F) or more |
|
Continuous time of fuel cut |
3 to 10 seconds |
TYPICAL MALFUNCTION THRESHOLDS
Sensor voltage detection monitor (Lean side malfunction P2195, P2197):
|
A/F sensor voltage |
More than 3.8 V |
Sensor voltage detection monitor (Rich side malfunction P2196, P2198):
|
A/F sensor voltage |
Less than 2.8 V |
Sensor current detection monitor (High side malfunction P2195, P2197):
|
Air-fuel ratio sensor current during fuel cut |
3.6 mA or more |
Sensor current detection monitor (Rich side malfunction P2196, P2198):
|
Air-fuel ratio sensor current during fuel cut |
Less than 1.4 mA |
MONITOR RESULT
Detailed information on Checking Monitor Status
![2006 MY LX470 [05/2005 - ]; 2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: CHECKING MONITOR STATUS](../../../../stylegraphics/info.gif "2006 MY LX470 [05/2005 - ]; 2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: CHECKING MONITOR STATUS")
.
The test value and test limit information are described as shown in the following table. Check the monitor result and test values after performing the monitor drive pattern (refer to "Confirmation Monitor").
- Monitor Identification Date (MID) is assigned to each emission-related component.
- Test Identification Date (TID) is assigned to each emission-related component.
- Scaling is used to calculate the test value indicated on generic OBD II scan tools.
A/F Sensor Bank 1
|
MID |
TID |
Scaling |
Description of Test Value |
Minimum Test Limit |
Maximum test Limit |
|---|---|---|---|---|---|
|
$01 |
$91 |
Multiply by 0.004 [mA] |
Air-fuel ratio sensor current for bank 1 sensor 1 |
Malfunction criterion for low side rationality |
Malfunction criterion for high side rationality |
A/F Sensor Bank 2
|
MID |
TID |
Scaling |
Description of Test Value |
Minimum Test Limit |
Maximum test Limit |
|---|---|---|---|---|---|
|
$05 |
$91 |
Multiply by 0.004 [mA] |
Air-fuel ratio sensor current for bank 2 sensor 1 |
Malfunction criterion for low side rationality |
Malfunction criterion for high side rationality |
WIRING DIAGRAM
CONFIRMATION DRIVING PATTERN
This confirmation driving pattern is used in the following diagnostic troubleshooting inspection procedure when using the intelligent tester.
- (a) Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
- (b) Turn the ignition switch ON.
- (c) Turn the tester ON.
- (d) Clear DTCs.
- (e) Start the engine, and warm it up until the ECT reaches 70°C (158°F) or higher.
- (f) On the intelligent tester, enter the following menus to check the fuel-cut status: DIAGNOSIS / ENHANCED OBD II / DATA LIST / USER DATA / FC IDLE.
- (g) Drive the vehicle at between 60 km/h (38 mph) and 120 km/h (75 mph) for at least 10 minutes.
- (h) Change the transmission to 2nd gear.
-
(i) Drive the vehicle at proper vehicle speed to perform fuel-cut operation.
HINT:
Fuel-cut is performed when the following conditions are met:
- Accelerator pedal fully released.
- Engine speed is 2,500 rpm or more (fuel injection returns at 1,000 rpm).
- (j) Accelerate the vehicle to 64 km/h (40 rpm) or more by depressing the accelerator pedal for at least 10 seconds.
- (k) Soon after performing step (i) above, release the accelerator pedal for at least 4 seconds without depressing the brake pedal in order to execute fuel-cut control.
- (l) Allow the vehicle to decelerate until the vehicle speed declines to less than 10 km/h (6 mph).
-
(m) Repeat steps from (i) through (l) above at least 3 times in one driving cycle.
HINT:
Completion of all A/F sensor monitors is required to change the value in TEST RESULT.
CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive patterns.
INSPECTION PROCEDURE
HINT:
Malfunctioning areas can be identified by performing the A/F CONTROL function provided in the ACTIVE TEST. The A/F CONTROL function can help to determine whether the Air Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.
The following instructions describe how to conduct the A/F CONTROL operation using the intelligent tester.
- Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
- Start the engine and turn the tester ON.
- Warm up the engine at an engine speed of 2,500 rpm for approximately 90 seconds.
- On the intelligent tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL.
- Perform the A/F CONTROL operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume).
- Monitor the output voltages of the A/F and HO2 sensors (AFS B1S1 and O2S B1S2 or AFS B2S1 and O2S B2S2) displayed on the tester.
HINT:
- The A/F CONTROL operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
- Each sensor reacts in accordance with increases in the fuel injection volume.
Standard:
|
Tester Display (Sensor) |
Injection Volume |
Status |
Voltage |
|---|---|---|---|
|
AFS B1S1 or AFS B2S1 (A/F) |
+25% |
Rich |
Less than 3.0 |
|
AFS B1S1 or AFS B2S1 (A/F) |
-12.5% |
Lean |
More than 3.35 |
|
O2S B1S2 or O2S B2S2 (HO2) |
+25% |
Rich |
More than 0.55 |
|
O2S B1S2 or O2S B2S2 (HO2) |
-12.5% |
Lean |
Less than 0.4 |
NOTICE:
The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.
|
Case |
A/F Sensor (Sensor 1) Output Voltage |
HO2 Sensor (Sensor 2) Output Voltage |
Main Suspected Trouble Areas |
||
|---|---|---|---|---|---|
|
1 |
Injection Volume +25% -12.5% |
|
Injection Volume +25% -12.5% |
|
- |
|
Output Voltage More than 3.35 V Less than 3.0 V |
|
Output Voltage More than 0.55 V Less than 0.4 V |
|
||
|
2 |
Injection Volume +25 % -12.5 % |
|
Injection Volume +25% -12.5% |
|
|
|
Output Voltage Almost no reaction |
|
Output Voltage More than 0.55 V Less than 0.4 V |
|
||
|
3 |
Injection Volume +25% -12.5% |
|
Injection Volume +25% -12.5% |
|
|
|
Output Voltage More than 3.35 V Less than 3.0 V |
|
Output Voltage Almost no reaction |
|
||
|
4 |
Injection volume +25% -12.5% |
|
Injection Volume +25% -12.5% |
|
|
|
Output Voltage Almost no reaction |
|
Output Voltage Almost no reaction |
|
||
- Following the A/F CONTROL procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
- To display the graph, enter the following menus on the tester: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL / USER DATA / AFS B1S1 and O2S B1S2 or AFS B2S1 and O2S B2S2. Then press the YES button and ENTER button, followed by the F4 button.
HINT:
- Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
- A low A/F sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
- A high A/F sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
PROCEDURE
|
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, 2197 OR P2198) |
(a) Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester ON
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read DTCs.
Result:
|
Display (DTC Output) |
Proceed to |
|---|---|
|
P2195, P2196, P2197, or P2198 |
A |
|
P2195, P2196, P2197, or P2198 and other DTCs |
B |
HINT:
If any DTCs other than P2195, P2196, P2197 or P2198 are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
READ VALUE USING INTELLIGENT TESTER (TEST VALUE OF A/F SENSOR) |
(a) Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
(b) Turn the ignition switch ON and turn the tester ON.
(c) Clear DTCs.
(d) Allow the vehicle to drive in accordance with the drive pattern described in the CONFIRMATION DRIVING PATTERN.
(e) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / MONITOR STATUS.
(f) Check the the status of O2S MON is COMPL.
If the status is still INCMPL, drive the vehicle according to the driving pattern again.
HINT:
- AVAIL indicates that the component has not been monitored yet.
- COMPL indicates that the component is functioning normally.
- INCMPL indicates that the component is malfunctioning.
(g) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / TEST RESULT / RANGE B1S1; then press the ENTER button.
(h) Check the test value of the A/F sensor output current during fuel-cut.
Result:
|
Test Value |
Proceed to |
|---|---|
|
Within normal range (1.4 mA or more, and less than 3.6 mA) |
A |
|
Outside normal range (Less than 1.4 mA, or 3.6 mA or more) |
B |
| B |
|
|
|
3. |
READ VALUE USING INTELLIGENT TESTER (OUTPUT VOLTAGE OF A/F SENSOR) |
(a) Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
(b) Start the engine.
(c) Turn the tester ON.
(d) Warm up the Air Fuel Ratio (A/F) sensor at an engine speed of 2,500 rpm for 90 seconds.
(e) On the tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / SNAPSHOT / MANUAL SNAPSHOT / USER DATA / AFS B1S1 or AFS B2S1 and ENGINE SPD.
(f) Check the A/F sensor voltage three times, when the engine is in each of the following conditions:
(1) While idling (check for at least 30 seconds)
(2) At an engine speed of approximately 2,500 rpm (without any sudden changes in engine speed)
(3) Raise the engine speed to 4,000 rpm and then quickly release the accelerator pedal so that the throttle valve is fully closed.
Standard voltage:
|
Condition |
A/F Sensor Voltage Variation |
Reference |
|---|---|---|
|
(1) and (2) |
Changes at approximately 3.3 V |
Between 3.1 V and 3.5 V |
|
(3) |
Increases to 3.8 V or more |
This occurs during engine deceleration (when fuel-cut performed) |
HINT:
-
For more information, see the diagrams below.
- If the output voltage of the A/F sensor remains at approximately 3.3 V (see Malfunction Condition diagram) under any conditions, including those above, the A/F sensor may have an open circuit (this will also happen if the A/F sensor heater has an open circuit).
- If the output voltage of the A/F sensor remains at either approximately 3.8 V or more, or 2.8 V or less (see Malfunction Condition diagram) under any conditions, including those above, the A/F sensor may have a short circuit.
- The ECM stops fuel injection (fuel cut) during engine deceleration. This causes a lean condition and results in a momentary increase in the A/F sensor output voltage.
- The ECM must establish a closed throttle valve position learning value to perform fuel cut. If the battery terminal has been reconnected, the vehicle must be driven over 16 km/h (10 mph) to allow the ECM to learn the closed throttle valve position.
-
When the vehicle is driven:
The output voltage of the A/F sensor may be below 2.8 V during fuel enrichment. For the vehicle, this translates to a sudden increase in speed with the accelerator pedal fully depressed when trying to overtake another vehicle. The A/F sensor is functioning normally.
- The A/F sensor is a current output element; therefore, the current is converted into a voltage inside the ECM. Measuring the voltage at the connectors of the A/F sensor or ECM will show a constant voltage result.
| NG |
|
|
|
4. |
PERFORM CONFIRMATION DRIVING PATTERN |
|
|
5. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) |
(a) Read DTCs using the intelligent tester.
(b) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
Result:
|
Display (DTC Output) |
Proceed to |
|---|---|
|
P2195, P2196, P2197, or P2198 |
A |
|
No output |
B |
| B |
|
|
|
6. |
REPLACE AIR FUEL RATIO SENSOR |
(a)
Replace A/F sensor
.
|
|
7. |
PERFORM CONFIRMATION DRIVING PATTERN |
|
|
8. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) |
(a) Read DTCs using the intelligent tester.
(b) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
Result:
|
Display (DTC Output) |
Proceed to |
|---|---|
|
No output |
A |
|
P2195, P2196, P2197, or P2198 |
B |
| B |
|
|
|
9. |
CONFIRM WHETHER VEHICLE HAS RUN OUT OF FUEL IN PAST |
| NO |
|
| YES |
|
|
10. |
INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) |
|
(a) Disconnect the A53 or A54 A/F sensor connector. (b) Measure the resistance of the A/F sensor connector. Standard resistance:
(c) Reconnect the A/F sensor connector. |
|
| NG |
|
|
|
11. |
INSPECT A/F RELAY (Marking: A/F HTR) |
|
(a) Remove the A/F relay from the No. 8 engine room relay block. (b) Measure the resistance of the A/F relay. Standard resistance:
(c) Reinstall the A/F relay. |
|
| NG |
|
|
|
12. |
CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) |
(a)
Check harness and connector
.
| NG |
|
|
|
13. |
CHECK AIR INDUCTION SYSTEM |
(a) Check the air induction system for vacuum leakage.
OK:
No leakage from air induction system.
| NG |
|
|
|
14. |
CHECK FUEL PRESSURE |
(a)
Check the fuel pressure
.
| NG |
|
|
|
15. |
INSPECT FUEL INJECTOR |
(a) Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor).
| NG |
|
|
|
16. |
REPLACE AIR FUEL RATIO SENSOR |
(a)
Replace A/F sensor
.
|
|
17. |
PERFORM CONFIRMATION DRIVING PATTERN |
|
|
18. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) |
(a) Read DTCs using the intelligent tester.
(b) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
Result:
|
Display (DTC Output) |
Proceed to |
|---|---|
|
No output |
A |
|
P2195, P2196, P2197 or P2198 |
B |
| B |
|
|
|
19. |
CONFIRM WHETHER VEHICLE HAS RUN OUT OF FUEL IN PAST |
| NO |
|
| YES |
|
|
20. |
REPLACE AIR FUEL RATIO SENSOR |
(a)
Replace A/F sensor
.
|
|
21. |
PERFORM CONFIRMATION DRIVING PATTERN |
|
|
22. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) |
(a) Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
(b) Turn the ignition switch ON and turn the tester ON.
(c) Read DTCs using the intelligent tester.
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
Result:
|
Display (DTC Output) |
Proceed to |
|---|---|
|
No output |
A |
|
P2195, P2196, P2197 or P2198 (A/F sensor pending DTCs) |
B |
| B |
|
| A |
|
|
|