Code
P0615
Generic
P — Powertrain
Starter Relay A Circuit
Views:
UK: 15
EN: 30
RU: 21
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in starter relay A control or supply circuit
- Poor or corroded connector or ground at relay, battery, or PCM
- Faulty starter relay (stuck, burned coil, or internal short)
- Faulty PCM/ECM driver output
- Low battery voltage or weak battery affecting circuit readings
- Recent repairs or damage (pinched wires, improper routing)
Symptoms
- Engine does not crank when key is turned or push-button start pressed
- Intermittent or no starter engagement
- Clicking noise from relay or starter solenoid
- No crank but dash electronics still powered
- Possible illumination of MIL or starter-related warning
What to check
- Verify battery voltage at rest and during cranking (>12.4 V rest, >10 V during crank recommended)
- Scan for stored freeze frame and related DTCs (starter, battery, grounds, body control)
- Visually inspect starter relay, fuse(s), connectors, and wiring for damage or corrosion
- Wiggle test wiring while observing scan tool or voltage readings for intermittent faults
- Check for corrosion or poor contact at battery terminals and ground straps
Signal parameters
- Control signal from PCM to relay coil: expected near 0 V (ground) or battery voltage when commanded—varies by vehicle; commanded state should change when start is requested
- Relay coil resistance (approx): 20–200 ohms typical depending on relay design (verify spec for vehicle)
- Supply voltage to relay coil: close to battery voltage (approx 11–14 V) with ignition on
- If PCM grounds the relay, expect continuity to chassis ground when commanded; if PCM supplies +12V, expect battery voltage present at control pin when commanded
- No-load current pulse to relay coil when energized (should draw measurable coil current; open coil shows no current, short draws excessive current)
Diagnostic algorithm
- Retrieve freeze frame and all stored DTCs; note any related codes (battery, grounds, BCM/IPC).
- Verify battery condition and charge if low; retest with a fully charged battery.
- Inspect relay, fuse(s), wiring harness, and connectors for damage, corrosion, loose pins, or water intrusion; repair as needed.
- With connector disconnected, measure relay coil resistance across coil terminals; compare to specification. If coil open or shorted, replace relay.
- Reconnect relay. With a voltmeter, check for proper supply voltage to relay power terminal with ignition ON. Check control terminal while one technician or jumper simulates start request: control should change state (voltage or ground).
- If control signal does not change, backprobe PCM/BCM control pin and verify driver output when start is requested. Check for high resistance to ground or short to voltage.
- Check continuity from relay control and supply pins to the PCM and to battery/ground respectively. Repair any open or high-resistance circuits.
- If wiring and relay are good but PCM output never commands the relay, consider PCM driver fault—verify inputs to PCM (immobilizer, start switch, park/neutral switch) before replacing PCM.
- After repairs, clear codes and perform multiple start cycles to confirm the fault does not return.
Likely causes
- Blown fuse or fusible link supplying relay coil
- Damaged relay socket terminals (corrosion, bent pins)
- Broken wire at harness flex point near steering column or starter
- High-resistance ground at relay or engine block
- Faulty starter relay coil (internal open or short)
- PCM driver open/short to ground or supply
Fault status
Status
Starter Relay A control circuit fault detected (open/short/high resistance or incorrect control signal).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Workshop Manuals
Available brands with manuals
2
AUDI 11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
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Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
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AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
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Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
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Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
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Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
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Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop Manual199,00 UAH
Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop Manual199,00 UAH
Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
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Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop Manual199,00 UAH
LAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
P0615
HUMMER
P — Powertrain
Starter Relay Control Circuit
Views:
UK: 8
EN: 21
RU: 8
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in starter relay A control or supply circuit
- Poor or corroded connector or ground at relay, battery, or PCM
- Faulty starter relay (stuck, burned coil, or internal short)
- Faulty PCM/ECM driver output
- Low battery voltage or weak battery affecting circuit readings
- Recent repairs or damage (pinched wires, improper routing)
Symptoms
- Engine does not crank when key is turned or push-button start pressed
- Intermittent or no starter engagement
- Clicking noise from relay or starter solenoid
- No crank but dash electronics still powered
- Possible illumination of MIL or starter-related warning
What to check
- Verify battery voltage at rest and during cranking (>12.4 V rest, >10 V during crank recommended)
- Scan for stored freeze frame and related DTCs (starter, battery, grounds, body control)
- Visually inspect starter relay, fuse(s), connectors, and wiring for damage or corrosion
- Wiggle test wiring while observing scan tool or voltage readings for intermittent faults
- Check for corrosion or poor contact at battery terminals and ground straps
Signal parameters
- Control signal from PCM to relay coil: expected near 0 V (ground) or battery voltage when commanded—varies by vehicle; commanded state should change when start is requested
- Relay coil resistance (approx): 20–200 ohms typical depending on relay design (verify spec for vehicle)
- Supply voltage to relay coil: close to battery voltage (approx 11–14 V) with ignition on
- If PCM grounds the relay, expect continuity to chassis ground when commanded; if PCM supplies +12V, expect battery voltage present at control pin when commanded
- No-load current pulse to relay coil when energized (should draw measurable coil current; open coil shows no current, short draws excessive current)
Diagnostic algorithm
- Retrieve freeze frame and all stored DTCs; note any related codes (battery, grounds, BCM/IPC).
- Verify battery condition and charge if low; retest with a fully charged battery.
- Inspect relay, fuse(s), wiring harness, and connectors for damage, corrosion, loose pins, or water intrusion; repair as needed.
- With connector disconnected, measure relay coil resistance across coil terminals; compare to specification. If coil open or shorted, replace relay.
- Reconnect relay. With a voltmeter, check for proper supply voltage to relay power terminal with ignition ON. Check control terminal while one technician or jumper simulates start request: control should change state (voltage or ground).
- If control signal does not change, backprobe PCM/BCM control pin and verify driver output when start is requested. Check for high resistance to ground or short to voltage.
- Check continuity from relay control and supply pins to the PCM and to battery/ground respectively. Repair any open or high-resistance circuits.
- If wiring and relay are good but PCM output never commands the relay, consider PCM driver fault—verify inputs to PCM (immobilizer, start switch, park/neutral switch) before replacing PCM.
- After repairs, clear codes and perform multiple start cycles to confirm the fault does not return.
Likely causes
- Blown fuse or fusible link supplying relay coil
- Damaged relay socket terminals (corrosion, bent pins)
- Broken wire at harness flex point near steering column or starter
- High-resistance ground at relay or engine block
- Faulty starter relay coil (internal open or short)
- PCM driver open/short to ground or supply
Fault status
Status
Starter Relay A control circuit fault detected (open/short/high resistance or incorrect control signal).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P0615
LAND ROVER
P — Powertrain
Starter relay circuit
Views:
UK: 3
EN: 13
RU: 4
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in starter relay A control or supply circuit
- Poor or corroded connector or ground at relay, battery, or PCM
- Faulty starter relay (stuck, burned coil, or internal short)
- Faulty PCM/ECM driver output
- Low battery voltage or weak battery affecting circuit readings
- Recent repairs or damage (pinched wires, improper routing)
Symptoms
- Engine does not crank when key is turned or push-button start pressed
- Intermittent or no starter engagement
- Clicking noise from relay or starter solenoid
- No crank but dash electronics still powered
- Possible illumination of MIL or starter-related warning
What to check
- Verify battery voltage at rest and during cranking (>12.4 V rest, >10 V during crank recommended)
- Scan for stored freeze frame and related DTCs (starter, battery, grounds, body control)
- Visually inspect starter relay, fuse(s), connectors, and wiring for damage or corrosion
- Wiggle test wiring while observing scan tool or voltage readings for intermittent faults
- Check for corrosion or poor contact at battery terminals and ground straps
Signal parameters
- Control signal from PCM to relay coil: expected near 0 V (ground) or battery voltage when commanded—varies by vehicle; commanded state should change when start is requested
- Relay coil resistance (approx): 20–200 ohms typical depending on relay design (verify spec for vehicle)
- Supply voltage to relay coil: close to battery voltage (approx 11–14 V) with ignition on
- If PCM grounds the relay, expect continuity to chassis ground when commanded; if PCM supplies +12V, expect battery voltage present at control pin when commanded
- No-load current pulse to relay coil when energized (should draw measurable coil current; open coil shows no current, short draws excessive current)
Diagnostic algorithm
- Retrieve freeze frame and all stored DTCs; note any related codes (battery, grounds, BCM/IPC).
- Verify battery condition and charge if low; retest with a fully charged battery.
- Inspect relay, fuse(s), wiring harness, and connectors for damage, corrosion, loose pins, or water intrusion; repair as needed.
- With connector disconnected, measure relay coil resistance across coil terminals; compare to specification. If coil open or shorted, replace relay.
- Reconnect relay. With a voltmeter, check for proper supply voltage to relay power terminal with ignition ON. Check control terminal while one technician or jumper simulates start request: control should change state (voltage or ground).
- If control signal does not change, backprobe PCM/BCM control pin and verify driver output when start is requested. Check for high resistance to ground or short to voltage.
- Check continuity from relay control and supply pins to the PCM and to battery/ground respectively. Repair any open or high-resistance circuits.
- If wiring and relay are good but PCM output never commands the relay, consider PCM driver fault—verify inputs to PCM (immobilizer, start switch, park/neutral switch) before replacing PCM.
- After repairs, clear codes and perform multiple start cycles to confirm the fault does not return.
Likely causes
- Blown fuse or fusible link supplying relay coil
- Damaged relay socket terminals (corrosion, bent pins)
- Broken wire at harness flex point near steering column or starter
- High-resistance ground at relay or engine block
- Faulty starter relay coil (internal open or short)
- PCM driver open/short to ground or supply
Fault status
Status
Starter Relay A control circuit fault detected (open/short/high resistance or incorrect control signal).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
HTML Workshop Manuals AI manual library for LAND ROVER Click to show available manuals 1
LAND ROVER 2015 Discovery Sport HSE
HTML ManualWorkshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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👍 Like
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Send to email
Code
P0615
MITSUBISHI
P — Powertrain
Starter relay circuit
Views:
UK: 7
EN: 21
RU: 8
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in starter relay A control or supply circuit
- Poor or corroded connector or ground at relay, battery, or PCM
- Faulty starter relay (stuck, burned coil, or internal short)
- Faulty PCM/ECM driver output
- Low battery voltage or weak battery affecting circuit readings
- Recent repairs or damage (pinched wires, improper routing)
Symptoms
- Engine does not crank when key is turned or push-button start pressed
- Intermittent or no starter engagement
- Clicking noise from relay or starter solenoid
- No crank but dash electronics still powered
- Possible illumination of MIL or starter-related warning
What to check
- Verify battery voltage at rest and during cranking (>12.4 V rest, >10 V during crank recommended)
- Scan for stored freeze frame and related DTCs (starter, battery, grounds, body control)
- Visually inspect starter relay, fuse(s), connectors, and wiring for damage or corrosion
- Wiggle test wiring while observing scan tool or voltage readings for intermittent faults
- Check for corrosion or poor contact at battery terminals and ground straps
Signal parameters
- Control signal from PCM to relay coil: expected near 0 V (ground) or battery voltage when commanded—varies by vehicle; commanded state should change when start is requested
- Relay coil resistance (approx): 20–200 ohms typical depending on relay design (verify spec for vehicle)
- Supply voltage to relay coil: close to battery voltage (approx 11–14 V) with ignition on
- If PCM grounds the relay, expect continuity to chassis ground when commanded; if PCM supplies +12V, expect battery voltage present at control pin when commanded
- No-load current pulse to relay coil when energized (should draw measurable coil current; open coil shows no current, short draws excessive current)
Diagnostic algorithm
- Retrieve freeze frame and all stored DTCs; note any related codes (battery, grounds, BCM/IPC).
- Verify battery condition and charge if low; retest with a fully charged battery.
- Inspect relay, fuse(s), wiring harness, and connectors for damage, corrosion, loose pins, or water intrusion; repair as needed.
- With connector disconnected, measure relay coil resistance across coil terminals; compare to specification. If coil open or shorted, replace relay.
- Reconnect relay. With a voltmeter, check for proper supply voltage to relay power terminal with ignition ON. Check control terminal while one technician or jumper simulates start request: control should change state (voltage or ground).
- If control signal does not change, backprobe PCM/BCM control pin and verify driver output when start is requested. Check for high resistance to ground or short to voltage.
- Check continuity from relay control and supply pins to the PCM and to battery/ground respectively. Repair any open or high-resistance circuits.
- If wiring and relay are good but PCM output never commands the relay, consider PCM driver fault—verify inputs to PCM (immobilizer, start switch, park/neutral switch) before replacing PCM.
- After repairs, clear codes and perform multiple start cycles to confirm the fault does not return.
Likely causes
- Blown fuse or fusible link supplying relay coil
- Damaged relay socket terminals (corrosion, bent pins)
- Broken wire at harness flex point near steering column or starter
- High-resistance ground at relay or engine block
- Faulty starter relay coil (internal open or short)
- PCM driver open/short to ground or supply
Fault status
Status
Starter Relay A control circuit fault detected (open/short/high resistance or incorrect control signal).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
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0
Send to email
Code
P0615
OPEL
P — Powertrain
Starter Relay Circuit Open
Views:
UK: 2
EN: 7
RU: 3
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in starter relay A control or supply circuit
- Poor or corroded connector or ground at relay, battery, or PCM
- Faulty starter relay (stuck, burned coil, or internal short)
- Faulty PCM/ECM driver output
- Low battery voltage or weak battery affecting circuit readings
- Recent repairs or damage (pinched wires, improper routing)
Symptoms
- Engine does not crank when key is turned or push-button start pressed
- Intermittent or no starter engagement
- Clicking noise from relay or starter solenoid
- No crank but dash electronics still powered
- Possible illumination of MIL or starter-related warning
What to check
- Verify battery voltage at rest and during cranking (>12.4 V rest, >10 V during crank recommended)
- Scan for stored freeze frame and related DTCs (starter, battery, grounds, body control)
- Visually inspect starter relay, fuse(s), connectors, and wiring for damage or corrosion
- Wiggle test wiring while observing scan tool or voltage readings for intermittent faults
- Check for corrosion or poor contact at battery terminals and ground straps
Signal parameters
- Control signal from PCM to relay coil: expected near 0 V (ground) or battery voltage when commanded—varies by vehicle; commanded state should change when start is requested
- Relay coil resistance (approx): 20–200 ohms typical depending on relay design (verify spec for vehicle)
- Supply voltage to relay coil: close to battery voltage (approx 11–14 V) with ignition on
- If PCM grounds the relay, expect continuity to chassis ground when commanded; if PCM supplies +12V, expect battery voltage present at control pin when commanded
- No-load current pulse to relay coil when energized (should draw measurable coil current; open coil shows no current, short draws excessive current)
Diagnostic algorithm
- Retrieve freeze frame and all stored DTCs; note any related codes (battery, grounds, BCM/IPC).
- Verify battery condition and charge if low; retest with a fully charged battery.
- Inspect relay, fuse(s), wiring harness, and connectors for damage, corrosion, loose pins, or water intrusion; repair as needed.
- With connector disconnected, measure relay coil resistance across coil terminals; compare to specification. If coil open or shorted, replace relay.
- Reconnect relay. With a voltmeter, check for proper supply voltage to relay power terminal with ignition ON. Check control terminal while one technician or jumper simulates start request: control should change state (voltage or ground).
- If control signal does not change, backprobe PCM/BCM control pin and verify driver output when start is requested. Check for high resistance to ground or short to voltage.
- Check continuity from relay control and supply pins to the PCM and to battery/ground respectively. Repair any open or high-resistance circuits.
- If wiring and relay are good but PCM output never commands the relay, consider PCM driver fault—verify inputs to PCM (immobilizer, start switch, park/neutral switch) before replacing PCM.
- After repairs, clear codes and perform multiple start cycles to confirm the fault does not return.
Likely causes
- Blown fuse or fusible link supplying relay coil
- Damaged relay socket terminals (corrosion, bent pins)
- Broken wire at harness flex point near steering column or starter
- High-resistance ground at relay or engine block
- Faulty starter relay coil (internal open or short)
- PCM driver open/short to ground or supply
Fault status
Status
Starter Relay A control circuit fault detected (open/short/high resistance or incorrect control signal).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email