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CHECK HARNESS AND CONNECTOR (HO2 SENSOR - ECM)

Captiva Ecm Disconnect Socket

(a) Disconnect the B19 HO2 sensor connector.

(b) Disconnect the B30 ECM connector.

(c) Measure the resistance.

Standard resistance (Check for open)

Tester Connections

Specified Conditions

B19-1 (HT1B) - B3G-47 (HT1B)

Below 1 Q

Standard resistance (Check for short)

Tester Connections

Specified Conditions

B19-1 (HT1B) or B30-47 (HT1B) -Body ground

10 kQ or higher

(d) Reconnect the HO2 sensor connector.

(e) Reconnect the ECM connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch ON.

(e) Start the engine.

(f) Allow the engine to idle for 2 minutes or more.

(g) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

Result

Display (DTC Output)

Proceed To

No output

A

P0037, PGG38 and/or PG141

REPLACE ECM

CHECK FOR INTERMITTENT PROBLEMS

DTC

P0100

Mass or Volume Air Flow Circuit

DTC

P0102

Mass or Volume Air Flow Circuit Low Input

DTC

P0103

Mass or Volume Air Flow Circuit High Input

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