Subaru IMPREZA GD 2007 Series Manual page 3196

asieps_tobira_IM_US.book 67 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 INPUT VOLTAGE OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the ABSCM&H/U connectors.
3) Idle the engine.
4) Measure the voltage between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(B301) No. 18 (+) — Chassis ground (–):
(B301) No. 14 (+) — Chassis ground (–):
2 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:
3 CHECK VALVE RELAY IN ABSCM&H/U.
Measure the resistance between the
ABSCM&H/U terminals.
Terminals
No. 14 — No. 15:
4 CHECK POOR CONTACT OF CONNECTOR. Is there poor contact in connec-
5 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform the Inspection Mode.
4) Read the DTC.
6 CHECK OTHER DTC DETECTION.
Check
Is the voltage 10 — 15 V?
Is resistance less than 0.5 Ω?
Is the resistance 1 MΩ or
more?
tor between generator, battery
and ABSCM&H/U?
Is the same DTC still output?
Is there any other DTC
detected?
ABS(diag)-67
ABS (DIAGNOSTICS)
Yes No
Go to step 2. Repair the harness
connector between
battery and
ABSCM&H/U.
Go to step 3. Repair the
ABSCM&H/U
ground harness.
Go to step 4. Replace the
ABSCM only. <Ref.
to ABS-7,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Repair the connec- Go to step 5.
tor.
Go to step 6.
Replace the
ABSCM only. <Ref.
to ABS-7,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Check DTC using Temporary poor
"List of Diagnostic contact occurs.
Trouble Code
(DTC)". <Ref. to
ABS(diag)-34, List
of Diagnostic Trou-
ble Code (DTC).>