| Test | TECH 1 | Notes | Nominal Values | Pin | Possible |
|---|---|---|---|---|---|
| Step | Display | Trouble | |||
| No. | Codes | ||||
| 05 | INTAKE AIR TEMP. | Engine at idle speed, | 10 to 50 °C/50 to 122 °F | 44/26 | 69, 71 |
| operating temperature | 3.9 to 2.3 V |
Trouble-shooting: Nominal Value: Cause of Fault:
(If nominal value is not attained)
· Engine off, ignition ON
· Remove air flow meter < - 35 °C/- 31 °F > 4.9 V · Short circuit of signal lead Ter. 5
plug or Ter. 1 (with AFM without CO pot.)
to ground lead Ter. 4
· Ignition ON · Control unit defective
· Bridge Ter. 4 (-) with Ter. 5 or Ter. 1 > 180 °C/230 °F < 0.1 V · Lead interruption from
(with AFM without CO pot.) at air - Control unit Ter. 44 to AFM Ter. 5 or Ter. 1
flow meter plug with adapter - Control unit Ter. 26 to AFM Ter. 4
cables from KM-609 · Poor plug connection (loose contact
caused by pushed-back pin on AFM)
· Control unit defective
If nominal values are attained · Temperature sensor (AFM) defective
Intake air temperature sensor checking Note: The terminal designation is located under the
values Ter. 5 or Ter. 1 (signal lead)/Ter. the insulation of the wiring harness plug to the AFM.
4 (-): + 15 to + 30 °C/50 to 86 °F:
1450 to 3300 W