Subaru IMPREZA GD 2007 Series Manual page 3190

asieps_tobira_IM_US.book 61 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK GENERATOR.
1) Start the engine.
2) Run the engine at idle after warming up.
3) Measure the voltage between generator ter-
minal B and chassis ground.
Terminals
Generator B terminal (+) — Chassis
ground (–):
2 CHECK BATTERY TERMINAL.
Turn the ignition switch to OFF.
3 CHECK INPUT VOLTAGE OF ABSCM&H/U.
1) Disconnect the ABSCM&H/U connectors.
2) Idle the engine.
3) Operate devices such as headlights, air
conditioner, defogger, etc. which produce an
electrical load.
4) Measure the voltage between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(B301) No. 18 (+) — Chassis ground (–):
4 CHECK THE ABSCM&H/U GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance between the
ABSCM&H/U connector and chassis ground.
Connector & terminal
(B301) No. 15 — Chassis ground:
5 CHECK POOR CONTACT OF CONNECTOR. Is there poor contact in connec-
6 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
7 CHECK OTHER DTC DETECTION.
Check
Is the voltage 10 — 15 V?
Are the positive and negative
battery terminals clamped
tightly?
Is the voltage 10 — 15 V?
Is resistance less than 0.5 Ω?
tor between generator, battery
and ABSCM&H/U?
Is the same DTC still output?
Is there any other DTC
detected?
ABS(diag)-61
ABS (DIAGNOSTICS)
Yes No
Go to step 2. Repair the genera-
tor. <Ref. to
SC(H4SO)-14,
Generator.>
Go to step 3.
Tighten the termi-
nal.
Go to step 4. Repair the harness
connector between
battery, ignition
switch and
ABSCM&H/U.
Go to step 5. Repair the
ABSCM&H/U
ground harness.
Repair the connec- Go to step 6.
tor.
Go to step 7.
Replace the
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Perform the diag- Temporary poor
nosis according to contact occurs.
DTC.