HOW TO DIAGNOSE DAIHATSU OBD1 16 PIN WITHOUT OBD SCANNER
Accessing Code
- Trouble codes are displayed by the malfunction indicator lamp (MIL).Fig.5
- Switch ignition ON.
- Bridge data link connector (DLC) terminals 4 and 6 Fig. 1 .
- If no trouble codes are stored, the MIL will flash twice per second Fig. 2 .
- Each trouble code consists of two groups of one or more flashes Fig. 3 [A].
- Warning lamp flash duration: 0,5 second Fig. 3 [B].
- A 0,5 second pause separates each flash Fig. 3 [C].
- A 1,5 second pause separates each trouble code group Fig. 3 [D].
- A 2,5 second pause separates each trouble code Fig. 3 [E].
- For example: Two 0,5 second flashes – 1,5 second pause – one 0,5 second flash. Trouble code 21 displayed Fig. 3 heated oxygen sensor (HO2S).
- Trouble codes are repeated 4 seconds after last trouble code.
- Count MIL flashes. Note trouble codes. Compare with trouble code table.
- Remove bridge wire.
- Switch ignition OFF.
- Rectify faults as necessary.
Erasing Codes
NOTE: Fuse removal duration depends on ambient temperature. The lower the temperature the longer the fuse must be removed.
- Switch ignition OFF.
- Remove EFI fuse (15A) from engine bay fusebox for 10 seconds minimum Fig. 4 .
- Refit fuse.
- Trouble codes may also be erased by disconnecting battery earth lead.
WARNING: Disconnecting battery may erase memory from electronic units (e.g. radio, clock).
- Repeat checking procedure to ensure no data remains in ECM fault memory.
OBD1 CODES
Flash type | Fault location | Probable cause | |
| 13 | Camshaft position (CMP) sensor – no signal | Wiring, CMP sensor, ECM | |
| 18 | Knock sensor (KS) – circuit malfunction | Wiring, KS, ECM | |
| 21 | Heated oxygen sensor (HO2S)/oxygen sensor (O2S) – range/performance malfunction | Wiring, HO2S/O2S, ECM | |
| 24 | Mixture adjustment resistor – circuit malfunction | Wiring, mixture adjustment resistor, ECM | |
| 31 | Manifold absolute pressure (MAP) sensor – circuit malfunction | Wiring, MAP sensor, ECM | |
| 41 | Throttle position (TP) sensor – circuit malfunction | Wiring, TP sensor, ECM | |
| 42 | Engine coolant temperature (ECT) sensor – open/short circuit | Wiring, ECT sensor, ECM | |
| 43 | Intake air temperature (IAT) sensor – open/short circuit | Wiring, IAT sensor, ECM | |
| 44 | AC evaporator temperature sensor – circuit malfunction | Wiring, AC evaporator temperature sensor, ECM | |
| 45 | AC compressor clutch – circuit malfunction | Wiring, AC compressor clutch, AC compressor RPM sensor | |
| 51 | Switch signal – malfunction | Wiring, AC switch, PNP switch, TP sensor, ECM | |
| 52 | Vehicle speed sensor (VSS) – circuit malfunction | Wiring, speedometer, VSS, ECM | |
| 81 | Immobilizer control module – signal malfunction | Wiring, immobilizer control module, ECM | |
| 83 | Immobilizer control module/engine control module (ECM) – communication malfunction | Wiring, ECM | |