Check Engine Control Module
ENGINE CONTROL MODULE CHART
| Step |
Check |
Yes |
No |
1 CHECK ENGINE CONTROL MODULE SIGNAL.
- Start the engine.
- Measure voltage between engine control module connector and engine ground.
Connector & terminal
- H4 with TURBO:
(B134) No. 23 (+) - Engine ground (-):
- H6 model:
(B136) No. 9 (+) - Engine ground (-):
- H4 NA U5 model:
(B137) No. 9 (+) - Engine ground (-):
- H4 NA model (Except U5 model):
(B134) No. 10 (+) - Engine ground (-):
|
Is the measured value within 0 V to 14 V? |
Go to step 2
. |
Check engine control module. < Ref. to
BASIC DIAGNOSTIC PROCEDURE
or
BASIC DIAGNOSTIC PROCEDURE
or
BASIC DIAGNOSTIC PROCEDURE
or
BASIC DIAGNOSTIC PROCEDURE
. |
2 CHECK HARNESS BETWEEN COMBINATION METER AND ENGINE CONTROL MODULE.
- Turn ignition switch to OFF.
- Disconnect connector from engine control module and combination meter.
- Measure resistance between engine control module harness connector and combination meter harness connector.
Connector & terminal
- H4 with TURBO:
(B134) No. 23 - (H1) No. 7:
- H6 model:
(B136) No. 9 - (H1) No. 7:
- H4 NA U5 model:
(B137) No. 9 - (H1) No. 7:
- H4 NA model (Except U5 model):
(B134) No. 10 - (i11) No. 7:
|
Is the measured value less than 10 ohm? |
Check tachometer. < Ref. to REMOVAL
. > |
Repair wiring harness. |