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23 CHECK HEATED OXYGEN SENSOR 1 (BANK 1) HARNESS
1. Turn ignition switch “OFF” and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 1) harness connector.
4. Check harness continuity between ECM terminal 91 and heated oxygen sensor 1 (bank 1) terminal 1. Refer to “Wiring
Diagram”, EC-243
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 25.
NG © 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 1).
2. GO TO 4.
24 CHECK HEATED OXYGEN SENSOR 1 (BANK 2) HARNESS
1. Turn ignition switch “OFF” and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 2) harness connector.
4. Check harness continuity between ECM terminal 92 and heated oxygen sensor 1 (bank 2) terminal 1. Refer to “Wiring
Diagram”, EC-244.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 25.
NG © 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 2).
2. GO TO 4.
25 PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Reconnect ECM harness connector.
2. Perform “Accelerator pedal released position learning”, EC-71.
© GO TO 26.
26 PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform “Throttle Valve Closed Position Learning”, EC-71.
© GO TO 27.
27 PERFORM IDLE AIR VOLUME LEARNING
Perform “Idle Air Volume Learning”, EC-71.
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT (With CON-
SULT-II)
© GO TO 28.
CMPLT (Without CON-
SULT-II)
© GO TO 29.
INCMP © 1. Follow the construction of “Idle Air Volume Learning”.
2. GO TO 4.
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-68
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