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General Description
ENGINE (DIAGNOSTICS)
13) Diagnostics should be conducted by starting
with simple, easy operations then proceeding to
complicate, difficult operations. The most important
thing in diagnostics is to understand the customer's
complaint, and distinguish between the three caus-
es.
14) For the model with ABS, the ABS warning light
may illuminate when performing driving test with
jacked-up or lifted-up condition, but this is not a
system malfunction. This is due to speed difference
between the front and rear wheels. After diagnosis
of engine control system, perform the ABS memory
clear procedure of self-diagnosis function.
B: INSPECTION
Before performing diagnostics, check the following
items which might affect engine problems.
1. BATTERY
1) Measure the battery voltage and specific gravity
of electrolyte.
Standard voltage: 12 V
Specific gravity: 1.260 or more
2) Check the condition of main fuse, other fuses,
harnesses and connectors. Also check for proper
grounding.
2. ENGINE GROUND
Make sure the engine grounding terminal is proper-
ly connected to engine.
FU-01170
3. SELF-DIAGNOSIS FUNCTION
When a malfunction is detected by the self-diagno-
sis function of ECM, the malfunction indicator light
will come on to indicate the malfunction occur-
rence.
Calling the self-diagnosis result is performed by the
Subaru Select Monitor.
EN(H4DOTC)(diag)-6
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