[5th Gen : 08+]: Starter wiring diagram
#1
#4
Sorry for the delay in responding- I dont have a lot of time to watch this forum.
When this problem is present, is the engine cranking normally with a sudden stop or is it cranking slowly?
If its the former, its likely a starter problem. If its the latter, Id be ruling out the battery and cables/connections before looking at the starter.
When this problem is present, is the engine cranking normally with a sudden stop or is it cranking slowly?
If its the former, its likely a starter problem. If its the latter, Id be ruling out the battery and cables/connections before looking at the starter.
#7
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#8
Sorry it took so long to reply - its been a busy couple of days.
If the battery and cable connections are good then you need to determine if the problem is isolated to the starter motor circuit or the control circuit. Have you checked for codes? Even if the CEL isnt on, codes could be stored.
I do have access to a wiring diagram but I havent been able to figure out how to post it for you. Our service info has some kind of block on it that prevents copying or saving to be able to upload or post. Either that or Im just not smart enough to figure out how to do it.
The next best thing I can do is describe the current flow for each circuit. For the sake of clarity Im including the relevant wire colors and connectors/cavities which will be listed using abbreviations such as this - YL/GY (C2/8) - this means its a Yellow wire with Gray stripe in Connector 2, Cavity 8. Each means to, and SRP means Starter Relay Pin.
Starter Solenoid:
B+ RD TIPM Fuse J17 (40A) SRP 30 SRP 87 YL/GY (C2/8) Starter Solenoid Starter Case Ground
Control (Starter Relay Coil) Circuit:
B+ RD TIPM Internal Logic Board SRP 85 SR Coil SRP 86 DK GRN/OR (C2/24) PCM (C3/38)
To quickly isolate which side to focus on, wait until the problem is present and then jumper pins 30&87 of the relay - if the starter engages, you need to focus on the control side. No matter where in the circuits you check, you should see battery voltage (+/- 0.2v) up until the Starter solenoid or pin 85 on the control circuit.
If the battery and cable connections are good then you need to determine if the problem is isolated to the starter motor circuit or the control circuit. Have you checked for codes? Even if the CEL isnt on, codes could be stored.
I do have access to a wiring diagram but I havent been able to figure out how to post it for you. Our service info has some kind of block on it that prevents copying or saving to be able to upload or post. Either that or Im just not smart enough to figure out how to do it.
The next best thing I can do is describe the current flow for each circuit. For the sake of clarity Im including the relevant wire colors and connectors/cavities which will be listed using abbreviations such as this - YL/GY (C2/8) - this means its a Yellow wire with Gray stripe in Connector 2, Cavity 8. Each means to, and SRP means Starter Relay Pin.
Starter Solenoid:
B+ RD TIPM Fuse J17 (40A) SRP 30 SRP 87 YL/GY (C2/8) Starter Solenoid Starter Case Ground
Control (Starter Relay Coil) Circuit:
B+ RD TIPM Internal Logic Board SRP 85 SR Coil SRP 86 DK GRN/OR (C2/24) PCM (C3/38)
To quickly isolate which side to focus on, wait until the problem is present and then jumper pins 30&87 of the relay - if the starter engages, you need to focus on the control side. No matter where in the circuits you check, you should see battery voltage (+/- 0.2v) up until the Starter solenoid or pin 85 on the control circuit.
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67D200 (03-17-2023)