Without A Scan Tool
TROUBLE CODE CHECK IN NORMAL MODE
- To obtain an output of diagnostic trouble codes (DTC), proceed as follows:
1. Initial conditions
- Battery voltage 11 V or more
- Throttle valve fully closed (throttle position sensor IDL points closed)
- Transmission in neutral position
- Accessories switched OFF
- Engine at normal operating temperature
2. Turn the ignition switch ON.
Notice: DO NOT start the engine.
3. Using a jumper wire (or SST #09843-18020), connect terminals TE1 and E1 of the DLC1.
Malfunction Indicator Lamp (MIL) Location:
4. Read the flashes of the MIL to determine what codes are stored in ECM memory.
- See "DECODING MIL OUTPUT" below.
5. After the diagnosis check, remove the jumper from the DLC1.
TROUBLE CODE CHECK IN TEST MODE
- The same diagnostic items which are detected in the Normal Mode can also be detected in the Test Mode.
- Compared to the Normal Mode, the Test Mode has an increased sensing ability to detect malfunctions.
- It can also detect malfunctions in the starter signal circuit, air conditioning signal and PNP switch signal.
- To obtain an output of diagnostic trouble codes (DTCs), proceed as follows:
1. Initial conditions:
- Battery voltage 11 Volts or more
- Throttle valve fully closed (throttle position sensor IDL points closed)
- Transmission in neutral position
- Accessories switched OFF
NOTE: When the automatic transmission shift lever is in the "D", "2" "L" or "R" shift position, or when the air conditioning is on or when the accelerator pedal is depressed, code "51" (Switch condition signal) is output. This is not abnormal.
2. Turn the ignition switch OFF.
3. First, using a jumper wire (or SST 09843-18020), connect terminals TE2 and E1 of the DLC1.
NOTE: The test mode will not initiate if terminals TE2 and E1 are connected after the ignition switch is turned ON.
4. Turn the ignition switch ON.
NOTE: To confirm that the test mode is operating, check that the MIL flashes when the ignition switch is turned ON.
5. Start the engine and drive the vehicle at a speed of 10 km/h (6 mph) or higher.
NOTE: The starter signal and vehicle speed signal will be diagnosed by the ECM as malfunctions, and code Nos.42, and 43 will be output, if this step is not performed.
6. Simulate the conditions of the malfunction described by the customer.
7. Using another jumper (or SST), connect terminals TE1 and E1 of the DLC1.
8. Read the diagnostic trouble code as indicated by the number of flashes of the MIL.
- See "DECODING MIL OUTPUT" below.
9. After the diagnosis check, remove the SST from the DLC1.
DECODING MIL OUTPUT
Normal System Operation (no malfunction):
"Normal System Operation" Flash Pattern:
- The light will alternately blink ON and OFF at 0.26 second intervals.
Trouble Code Indication:
MIL Flash Patterns For DTC 13 And DTC 31:
- In the event of a malfunction, the duration the each light will blink (ON time) is 0.52 seconds.
- The number of the first "group" of blinks will equal the 1st digit of a 2 digit diagnostic trouble code.
- After a 1.5 second pause, the 2nd number of blinks will equal the second digit.
- When 2 or more codes are indicated, the lowest number (code) will appear first, followed a 2.5 second pause, then the next lowest numbered code, etc.
- After all the codes have been output, there will be a 4.5 second pause and they will all be repeated as long the terminals TE1 and E1 of the DLC1 are connected.
- All detected diagnostic trouble codes, except code Nos.16, 43 and 53 will be retained in memory by the ECM from the time of detection until cancelled out.
- Once malfunction is cleared, the MIL in the combination meter will go off but the diagnostic trouble code(s) remains stored in ECM memory (except for code Nos. 16, 43 and 51).