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Engine Control Module (ECM) Diagnostic Trouble Codes - 2 of 3: Wiring Volvo V40 I рестайлинг

Testing & Diagnostics 8 illustrations ~3600 words

Checking wiring

Check the flywheel and carrier plate for damage.

Check the signal cables between engine control module (ECM) terminals #24 and #54 and engine speed (RPM) sensor terminals #1 and #2. Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check for an intermittent short-circuit to each other and for intermittent open-circuits according to Open-circuit, intermittent faults .

HINT: With the ignition on, the voltage between engine speed (RPM) sensor connector terminals #1 and #2 must be approximately 1.8 V with the reading taken at the ground terminal.

Try a new engine speed (RPM) sensor if the above fault-tracing does not reveal any faults.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the engine speed (RPM) sensor, see «Replacing engine speed (RPM) sensor»(ref-441335-S23107681692011121500000) .

Scheme 122

Scheme 122
Scheme 122
  1. Continue Refer to «Information»(ref-441346-S04392472042011121500000)

Checking components and wiring

Check the flywheel and carrier plate for damage.

Check the signal cables between engine control module (ECM) terminals #24 and #54 and engine speed (RPM) sensor terminals #1 and #2. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults . Check for a short-circuit to each other and for open-circuits according to Open-circuit, permanent faults . Remedy if necessary.

HINT: With the ignition on, the voltage between engine speed (RPM) sensor connector terminals #1 and #2 must be approximately 1.8 V with the reading taken at the ground terminal.

Try a new engine speed (RPM) sensor if no faults are found in the above fault-tracing.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the engine speed (RPM) sensor, see «Replacing engine speed (RPM) sensor»(ref-441335-S23107681692011121500000) .

Scheme 123

Scheme 123
Scheme 123
  1. Continue Refer to «Verification»(ref-441346-S36070061342011121500000)

Check the engine control module (ECM) and canister purge (CP) valve connectors. Check for contact resistance and oxidation.

Check that the resistance in the canister purge (CP) valve between terminals #1 and #2 is approximately 21 ohms at +20 °C.

Check the signal cable between engine control module (ECM) terminal #4 and canister purge (CP) valve terminal #1. Check for an intermittent open-circuit. Remedy if necessary.

Check the power supply cable between the canister purge (CP) valve terminal #2 and system relay (2/14) terminal #5. Check for an intermittent open-circuit.

Other information

  1. See «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. See «Contents»(ref-441289-S02135994792011121500000)

Scheme 124

Scheme 124
Scheme 124

Scheme 125

Scheme 125
Scheme 125
  1. Continue Refer to «Information»(ref-441346-S19442766702011121500000)

Check that the resistance in the canister purge (CP) valve between terminals #1 and #2 is approximately 21 ohms at +20 °C.

Check the signal cable between engine control module (ECM) terminal 4 and canister purge (CP) valve terminal #1. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .
  1. Continue Refer to «Information»(ref-441346-S06114027312011121500000)

Checking wiring and connectors

  1. Ignition off
  2. Check the connector on the camshaft reset valve for contact resistance and oxidation. See «Contact resistance and oxidation»(ref-441291-S41448420802011121500000)
  3. Check the resistance of the camshaft reset valve between terminals #1 and #2. The resistance should be approximately 7 ohms at 25 °C
  4. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2. Check for an open-circuit according to «Open-circuit, permanent faults»(ref-441291-S38831997352011121500000)
  5. Check the power supply cable between system relay terminal #5 (87) and camshaft reset valve terminal #1 for an open-circuit according to «Open-circuit, permanent faults»(ref-441291-S38831997352011121500000) . Other information To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access and replace the camshaft reset valve, see «Replacing the variable valve timing (VVT) control valve»(ref-441341-S33641210962011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S13690780202011121500000)
  1. Ignition off
  2. Check the connector on the camshaft reset valve. Check for loose connections according to «Loose connections (terminals)»(ref-441291-S22081329982011121500000) . Check for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S00267239222011121500000)
  3. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2. Check for an intermittent short-circuit to supply voltage according to «Short-circuit to supply voltage, intermittent faults»(ref-441291-S39506668312011121500000)
  4. Remedy as necessary. Other information To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access and replace the camshaft reset valve, see «Replacing the variable valve timing (VVT) control valve»(ref-441341-S33641210962011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Information»(ref-441346-S28565582112011121500000)

Checking the wiring

  1. Ignition off
  2. Check the resistance of the camshaft reset valve between terminals #1 and #2. Resistance should be approximately 7 ohms
  3. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2 for a short-circuit to supply voltage according to «Short-circuit to supply voltage. Permanent faults»(ref-441291-S37119086802011121500000)
  4. Remedy as necessary. Other information: To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access and replace the camshaft reset valve, see «Replacing the camshaft seals»(ref-441341-S17309697062011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S22473899532011121500000)
  1. Ignition off
  2. Check the resistance of the camshaft reset valve between terminals #1 and #2. The resistance must be approximately 7 ohms at 25 °C
  3. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2. Check for a short-circuit to supply voltage according to «Short-circuit to supply voltage. Permanent faults»(ref-441291-S37119086802011121500000)
  4. Remedy as necessary. Other information: To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access or replace the camshaft reset valve, see «Replacing the variable valve timing (VVT) control valve»(ref-441341-S33641210962011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S22057244842011121500000)
  1. Ignition off
  2. Check the connector on the camshaft reset valve. Check for loose connections according to «Loose connections (terminals)»(ref-441291-S22081329982011121500000) . Check for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S00267239222011121500000)
  3. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2. Check for an intermittent short-circuit to ground according to «Short-circuit to ground, intermittent faults»(ref-441291-S16169375282011121500000)
  4. Check the power supply cable between system relay terminal #5 (87) and camshaft reset valve terminal #1. Check for an intermittent short-circuit to ground according to «Short-circuit to ground, intermittent faults»(ref-441291-S16169375282011121500000)
  5. Remedy as necessary. Other information To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access or replace the camshaft reset valve, see «Replacing the variable valve timing (VVT) control valve»(ref-441341-S33641210962011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Information»(ref-441346-S18890973332011121500000)
  1. Ignition off
  2. Check the connector on the camshaft reset valve for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S41448420802011121500000)
  3. Check the resistance of the camshaft reset valve between terminals #1 and #2. The resistance must be approximately 7 ohms
  4. Check the signal cable between engine control module (ECM) terminal #62 and camshaft reset valve terminal #2 for a short-circuit to ground according to «Short-circuit to ground, permanent faults»(ref-441291-S27984344722011121500000)
  5. Check the power supply cable between system relay terminal #5 (87) and camshaft reset valve terminal #1 for a short-circuit to ground according to «Short-circuit to ground, permanent faults»(ref-441291-S27984344722011121500000)
  6. Remedy as necessary. Other information: To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access and replace the camshaft reset valve, see «Replacing the camshaft seals»(ref-441341-S17309697062011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S25618656562011121500000)
  1. Ignition off
  2. Check the connector on the camshaft reset valve for contact resistance and oxidation. See «Contact resistance and oxidation»(ref-441291-S41448420802011121500000)
  3. Check the camshaft reset valve resistance. The resistance must be approximately 7 ohms at 25 °C
  4. Check the signal cable between the engine control module (ECM) terminal #62 and camshaft reset valve terminal #2. Check for a short-circuit to ground according to «Short-circuit to ground, permanent faults»(ref-441291-S27984344722011121500000)
  5. Check the power supply cable between system relay terminal #5 (87) and camshaft reset valve terminal #1. Check for a short-circuit to ground according to «Short-circuit to ground, permanent faults»(ref-441291-S27984344722011121500000)
  6. Remedy as necessary. Other information: To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To access or replace the camshaft reset valve, see «Replacing the variable valve timing (VVT) control valve»(ref-441341-S33641210962011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S18543587312011121500000)

Check the engine control module (ECM) and air conditioning (A/C) pressure sensor connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .

Check in particular for damage or loose terminal pins.

Check the signal cable between engine control module (ECM) terminal #14 and air conditioning (A/C) pressure sensor terminal 2. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.

Check the ground lead between engine control module (ECM) terminal #77 and air conditioning (A/C) pressure sensor terminal 1. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.

Try a new air conditioning (A/C) pressure sensor if no faults are found in the above fault-tracing.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the air conditioning (A/C) pressure sensor, see «Replacing the air conditioning (A/C) system pressure sensor»(ref-441335-S34565070732011121500000) .

Scheme 126

Scheme 126
Scheme 126
  1. Continue Refer to «Information»(ref-441346-S17404012402011121500000)

Check the engine control module (ECM) and air conditioning (A/C) pressure sensor connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .

Check in particular for damage or loose terminal pins.

Check the signal cable between engine control module (ECM) terminal #14 and air conditioning (A/C) pressure sensor terminal 2. Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Check the power supply cable between engine control module (ECM) terminal #74 and air conditioning (A/C) pressure sensor terminal 3. Check for an intermittent open-circuit according to Open-circuit, intermittent faults .

Remedy as necessary.

HINT: The diagnostic trouble code (DTC) may be caused by low temperatures despite there being no faults.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the air conditioning (A/C) pressure sensor, see «Replacing the air conditioning (A/C) system pressure sensor»(ref-441335-S34565070732011121500000) .
  1. Continue Refer to «Information»(ref-441346-S12030996472011121500000)

Checking wiring and terminals

Check the cable between engine control module (ECM) terminal 52 and ABS control module terminal #25 for an open-circuit according to Open-circuit, permanent faults . Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Remedy as necessary.

  1. Continue Refer to «Verification»(ref-441346-S04286259932011121500000)
  1. Ignition off
  2. Check the DSA control module and engine control module (ECM) connectors for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S41448420802011121500000)
  3. Check the signal cable between engine control module (ECM) terminal 36 and DSA control module terminal 5 for an open-circuit according to «Open-circuit, permanent faults»(ref-441291-S38831997352011121500000)
  4. Remedy as necessary. Other information To connect the engine control module (ECM) breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For connecting DSA control module breakout box, see «Connecting the breakout box. DSA»(ref-441291-S01847758132011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S04070957622011121500000)
  1. Ignition off
  2. Check the DSA control module and engine control module (ECM) connectors for loose connections according to «Loose connections (terminals)»(ref-441291-S22081329982011121500000) and contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S00267239222011121500000)
  3. Check the signal cable between engine control module (ECM) terminal 36 and DSA control module terminal 5 for an intermittent short-circuit to supply voltage according to «Short-circuit to supply voltage, intermittent faults»(ref-441291-S39506668312011121500000)
  4. Remedy as necessary. Other information To connect the engine control module (ECM) breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For connecting DSA control module breakout box, see «Connecting the breakout box. DSA»(ref-441291-S01847758132011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Information»(ref-441346-S01252509052011121500000)
  1. Ignition off
  2. Check the signal cable between engine control module (ECM) terminal 36 and DSA control module terminal 5 for a short-circuit to supply voltage according to «Short-circuit to supply voltage. Permanent faults»(ref-441291-S37119086802011121500000)
  3. Remedy as necessary. Other information: To connect the engine control module (ECM) breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For connecting DSA control module breakout box, see «Connecting the breakout box. DSA»(ref-441291-S01847758132011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S26798522412011121500000)
  1. Ignition off
  2. Check the connectors on the engine control module (ECM) and DSA control module. Check for loose connections according to «Loose connections (terminals)»(ref-441291-S22081329982011121500000) . Check for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S00267239222011121500000)
  3. Check the signal cable between engine control module (ECM) terminal #36 and DSA control module terminal #5. Check for an intermittent short-circuit to ground according to «Short-circuit to ground, intermittent faults»(ref-441291-S16169375282011121500000)
  4. Remedy as necessary. Other information To connect the engine control module (ECM) breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) To connect the DSA control module breakout box, see «Connecting the breakout box. DSA»(ref-441291-S01847758132011121500000) For information about signals see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Information»(ref-441346-S29723572452011121500000)
  1. Ignition off
  2. Check the connectors on DSA control module terminal 5 and control module terminal 36 for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S41448420802011121500000)
  3. Check the signal cable between engine control module (ECM) terminal 36 and DSA control module terminal 5 for a short-circuit to ground according to «Short-circuit to ground, permanent faults»(ref-441291-S27984344722011121500000)
  4. Remedy as necessary. Other information: To connect the engine control module (ECM) breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For connecting DSA control module breakout box, see «Connecting the breakout box. DSA»(ref-441291-S01847758132011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S09305437672011121500000)
  1. Ignition off
  2. Check the throttle position (TP) sensor and engine control module (ECM) terminals visually according to «Inspect terminals visually»(ref-441291-S29438280782011121500000) and for intermittent contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S00267239222011121500000)
  3. Remedy as necessary. Other information: To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) To check / replace the throttle position (TP) sensor, see «Replacing throttle position (TP) sensor»(ref-441335-S28276217162011121500000) .
  1. Continue Refer to «Information»(ref-441346-S22876190392011121500000)
  1. Ignition off
  2. Check the throttle position (TP) sensor and engine control module (ECM) connectors for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-441291-S41448420802011121500000) . Other information To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) For information about signals, see «Signal specification»(ref-441338-S16642011902011121500000) .
  1. Continue Refer to «Checking signal»(ref-441346-S41027277492011121500000)

Check the engine control module (ECM) and engine speed (RPM) sensor connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .

Check in particular for damage or loose terminal pins.

Check the signal cables between engine control module (ECM) terminals #54 and #24 and engine speed (RPM) sensor terminals #2 and #1. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Check for a short-circuit to each other. Remedy if necessary.

If no faults are found in the above fault-tracing, try a new engine speed (RPM) sensor. See Replacing engine speed (RPM) sensor .

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .

Scheme 127

Scheme 127
Scheme 127
  1. Continue Refer to «Information»(ref-441346-S05854204482011121500000)

Checking the wiring and components

Check the engine speed (RPM) sensor resistance. The resistance must be between 250-350 ohms.

Check the signal cables between engine control module (ECM) terminals 24 and 54 and engine speed (RPM) sensor terminals 1 and 2. Check for a short-circuit to ground and voltage, short-circuit to each other and for an open-circuit. See Open-circuit, permanent faults . Remedy if necessary.

HINT: With the ignition on, the voltage between the engine speed (RPM) sensor connector terminals 1 and 2 should be approximately 1.8 V with the reading taken at the ground terminal.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .

Was a fault found in the above fault-tracing?

  1. YES Refer to «Verification»(ref-441346-S28232689812011121500000)
  2. NO Refer to «Defective engine speed (RPM) sensor»(ref-441346-S05471143542011121500000)

Check the resistance of the engine speed (RPM) sensor. The resistance must be between 250-350 ohms at 25 °C.

Remove the engine speed (RPM) sensor. Check that there is no dirt on the engine speed (RPM) sensor or flywheel. Check that there is no damage on the flywheel which could affect the signal.

Try a new engine speed (RPM) sensor if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To remove or replace the engine speed (RPM) sensor, see «Replacing engine speed (RPM) sensor»(ref-441335-S23107681692011121500000) .
  1. Continue Refer to «Verification»(ref-441346-S08854529692011121500000)

Check the flywheel and carrier plate for damage.

Check the signal cables between engine control module (ECM) terminals #24 and #54 and engine speed (RPM) sensor terminals #1 and #2. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for an intermittent short-circuit to each other or for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.

HINT: With the ignition on, the voltage between engine speed (RPM) sensor connector terminals #1 and #2 must be approximately 1.8 V with the reading taken at the ground terminal.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the engine speed (RPM) sensor, see «Replacing engine speed (RPM) sensor»(ref-441335-S23107681692011121500000) .
  1. Continue Refer to «Information»(ref-441346-S07477110422011121500000)

Check the engine speed (RPM) sensor resistance. The resistance must be between 250-350 ohms.

Check the signal cables between engine control module (ECM) terminals #24 and #54 and engine speed (RPM) sensor terminals #1 and #2. Check for a short-circuit to ground or supply voltage, for a short-circuit to each other or an open-circuit according to Open-circuit, permanent faults . Remedy if necessary.

HINT: With the ignition on, the voltage between engine speed (RPM) sensor connector terminals #1 and #2 must be approximately 1.8 V with the reading taken at the ground terminal.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .

Was a fault found in the above fault-tracing?

  1. YES Refer to «Verification»(ref-441346-S18246935282011121500000)
  2. NO Refer to «Defective engine speed (RPM) sensor»(ref-441346-S10348456412011121500000)

Check that the resistance between the air conditioning (A/C) relay terminals 1 and 2 is approximately 105 ohms at +20 °C.

Check the signal cable between the engine control module (ECM) terminal #68 and air conditioning (A/C) relay terminal 2 for an intermittent short-circuit to supply voltage and remedy according to Short-circuit to supply voltage, intermittent faults .

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .

Scheme 128

Scheme 128
Scheme 128

Check that the resistance between the air conditioning (A/C) relay terminals #1 and #2 is approximately 105 ohms at +20 °C.

Check the signal cable between the engine control module (ECM) terminal #68 and air conditioning (A/C) relay terminal #2. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .
  1. Continue Refer to «Information»(ref-441346-S18916081442011121500000)

Check that the resistance between the air conditioning (A/C) relay terminals 1 and 2 is approximately 105 ohms at +20 °C.

Check the signal cable between the engine control module (ECM) terminal #68 and air conditioning (A/C) relay terminal 2 for an intermittent short-circuit to ground and remedy according to Short-circuit to ground, intermittent faults .

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .

Check that the resistance between the air conditioning (A/C) relay terminals #1 and #2 is approximately 105 ohms at +20 °C.

Check the signal cable between the engine control module (ECM) terminal #68 and air conditioning (A/C) relay terminal #2. Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Remedy if necessary.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000) .
  1. Continue Refer to «Information»(ref-441346-S06168739512011121500000)

Check the signal cable between engine control module (ECM) terminal 34 and combined instrument panel terminal B23 for an intermittent open-circuit and remedy according to Open-circuit, intermittent faults .

If no fault can be found in the above fault-tracing try a new malfunction indicator lamp (MIL).

If that does not help, try a new combined instrument panel.

Other information

  1. To connect the breakout box, see «Connecting the breakout box. EMS 2000»(ref-441291-S13587040122011121500000)
  2. To replace the malfunction indicator lamp (MIL), see «Replacing bulbs in the combined instrument panel»(ref-441350-S06877150482011121500000)
  3. To replace the combined instrument panel see «Driver information module (DIM), installation/removal, component replacement»(ref-441303-S00728029162011121500000) .

Scheme 129

Scheme 129
Scheme 129
  1. Continue Refer to «Information»(ref-441346-S08151775002011121500000)

Check the cable between engine control module (ECM) terminal 34 and combined instrument panel connector terminal B23 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

  1. Continue Refer to «Verification»(ref-441346-S10472382952011121500000)

Check the signal cable between engine control module (ECM) terminal #34 and combined instrument panel terminal B23. Check for an intermittent short-circuit to supply voltage according to Open-circuit, intermittent faults . Remedy if necessary.

  1. Continue Refer to «Information»(ref-441346-S36051906142011121500000)

Check the signal cable between engine control module (ECM) terminal #34 and combined instrument panel terminal B23. Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Remedy if necessary.

  1. Continue Refer to «Information»(ref-441346-S08545808432011121500000)

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